Data / Nonprofits / Maryland / Rockville
Nonprofits in Rockville, MD: 1,219 registered with the IRS
1,219 nonprofits are registered with the IRS in Rockville, MD, 1,050 of them 501(c)(3) charities; the 479 that report revenue took in $9.28 billion. The largest by revenue: Financial Industry Regulatory Authority Inc ($2.61 billion), Finra Regulation Inc ($1.35 billion), Healthwell Foundation ($911.5 million). Most common causes: education (136), human services (99), religion-related (95).
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The 500 largest by revenue
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Financial Industry Regulatory Authority Inc | 501(c)(6) | 1937 | $2.61 billion | $3.10 billion | 2024-12 | |
| Finra Regulation Inc | 501(c)(6) | 1997 | $1.35 billion | $94.1 million | 2024-12 | |
| Healthwell Foundation | Health care | 501(c)(3) | 2005 | $911.5 million | $918.2 million | 2024-12 |
| Neca Ibew Family Medical Care Trust Fund | Mutual and membership benefit | 501(c)(9) | 2006 | $850.2 million | $1.25 billion | 2025-12 |
| Board of Education of Montgomery County Employee Benefit Trust Fund | 501(c)(9) | 1964 | $690.1 million | $19.4 million | 2025-06 | |
| United States Pharmacopeial Convention Inc | Health care | 501(c)(3) | 1959 | $357.7 million | $788.7 million | 2025-06 |
| American Kidney Fund Inc | 501(c)(3) | 1971 | $324.6 million | $199.2 million | 2025-12 | |
| Special Agents Mutual Benefit | 501(c)(9) | 1950 | $259.5 million | $249.6 million | 2024-12 | |
| Hebrew Home of Greater Washington Inc | Health care | 501(c)(3) | 2011 | $82.7 million | $281.5 million | 2024-12 |
| Foundation for the National Institute of Health Inc | Medical research | 501(c)(3) | 1997 | $78.5 million | $214.1 million | 2024-12 |
| American Speech Language & Hearing Association | 501(c)(6) | 1948 | $75.3 million | $184 million | 2024-12 | |
| Fisher House Foundation Inc | 501(c)(3) | 1993 | $70 million | $107.7 million | 2024-12 | |
| Goodwill Industries International Inc | Recreation and sports | 501(c)(3) | 1952 | $66.6 million | $76.7 million | 2025-12 |
| King Farm Presbyterian Retirement | Housing and shelter | 501(c)(3) | 2006 | $51.1 million | $291.9 million | 2024-12 |
| Jewish Social Service Agency | Human services | 501(c)(3) | 1942 | $50.6 million | $76.8 million | 2025-06 |
| Arc of Montgomery County Inc | 501(c)(3) | 1956 | $49.7 million | $26.2 million | 2025-06 | |
| Transportation-Communications Union | 501(c)(5) | 1944 | $46.3 million | $46.7 million | 2024-12 | |
| Child Trends Incorporated | Human services | 501(c)(3) | 1979 | $43.1 million | $24.4 million | 2025-12 |
| American Physiological Society | Mental health and crisis intervention | 501(c)(3) | 1938 | $40.5 million | $93.2 million | 2024-12 |
| Charles E Smith Jewish Day School of Greater Washington Inc | Education | 501(c)(3) | 1976 | $38.5 million | $70.4 million | 2025-06 |
| Jewish Foundation for Group Homes | Human services | 501(c)(3) | 1982 | $35 million | $48 million | 2025-06 |
| Cornerstone Montgomery Inc | 501(c)(3) | 1971 | $34.8 million | $30 million | 2025-06 | |
| Montgomery Hospice Inc | Human services | 501(c)(3) | 1980 | $33.2 million | $43.6 million | 2024-12 |
| Mechanical Contractors Association of America Inc | 501(c)(6) | 1958 | $32.8 million | $47.2 million | 2025-12 | |
| Woodmont Country Club | 501(c)(7) | 1951 | $32.3 million | $61.3 million | 2025-12 | |
| American College of Gastroenterology Inc | Medical research | 501(c)(3) | 1954 | $29 million | $316.9 million | 2024-12 |
| Melvin J Berman Hebrew Academy | Religion-related | 501(c)(3) | 1945 | $28.9 million | $32.5 million | 2025-06 |
| Association for Financial Professionals Inc | 501(c)(6) | 1981 | $26.9 million | $34.1 million | 2025-06 | |
| Inteleos Inc | 501(c)(6) | 1976 | $26.9 million | $28 million | 2024-12 | |
| Montgomery County Green Bank Corp | Environment | 501(c)(3) | 2017 | $25.5 million | $141.1 million | 2025-06 |
| Interfaith Works Inc | Religion-related | 501(c)(3) | 2002 | $23.8 million | $7.1 million | 2025-06 |
| The Humane League | Animal-related | 501(c)(3) | 2006 | $22.1 million | $27 million | 2025-12 |
| Ivymount School Inc | Education | 501(c)(3) | 1980 | $22.1 million | $16.4 million | 2025-06 |
| The Montgomery County Coalition for the Homeless Inc | Human services | 501(c)(3) | 1994 | $21.8 million | $4.6 million | 2025-06 |
| TLC- the Treatment & Learning Centers Inc | 501(c)(3) | 1958 | $20.4 million | $26.2 million | 2025-06 | |
| American Association of Immunologists Inc | Diseases, disorders and medical disciplines | 501(c)(3) | 2003 | $20.3 million | $91.5 million | 2025-12 |
| Amvets National Service Foundation | Public and societal benefit | 501(c)(3) | 2004 | $20.2 million | $42.4 million | 2025-08 |
| Everymind Inc | Mental health and crisis intervention | 501(c)(3) | 1957 | $19.8 million | $6.4 million | 2025-06 |
| Worksource Montgomery Inc | Community improvement and capacity building | 501(c)(3) | 2014 | $17.7 million | $9.8 million | 2025-06 |
| American Society of Addiction Medicine Inc | Mental health and crisis intervention | 501(c)(3) | 1986 | $16.8 million | $18 million | 2025-12 |
| Regulatory Affairs Professionals Society | Public and societal benefit | 501(c)(3) | 1979 | $16.3 million | $11.5 million | 2025-12 |
| Association of Community Cancer Centers | Diseases, disorders and medical disciplines | 501(c)(3) | 1975 | $15.6 million | $14.9 million | 2025-06 |
| Bender JCC of Greater Washington | Human services | 501(c)(3) | 1937 | $14.1 million | $30.1 million | 2025-06 |
| American Society for Biochemistry and Molecular Biology Inc | Science and technology | 501(c)(3) | 1942 | $13.9 million | $121.9 million | 2024-12 |
| Federation of American Societies for Experimental Biology | 501(c)(3) | 1959 | $12.2 million | $14.8 million | 2024-12 | |
| The Association for Research in Vision and Ophthalmology | 501(c)(3) | 1945 | $12.2 million | $22.9 million | 2025-12 | |
| Roberts Oxygen Co Inc Employee Benefit Trust Fund | Mutual and membership benefit | 501(c)(9) | 1992 | $12 million | $1.6 million | 2025-03 |
| Momentum Unlimited Inc | Religion-related | 501(c)(3) | 2012 | $11.9 million | $9.4 million | 2024-12 |
| Pediatric Nursing Certification Board Inc | 501(c)(6) | 2000 | $11.6 million | $43.9 million | 2025-09 | |
| American Podiatric Medical Assoc | 501(c)(6) | 1960 | $11.4 million | $21.3 million | 2025-05 | |
| Landow House Inc | Housing and shelter | 501(c)(3) | 2002 | $11.2 million | $22.9 million | 2024-12 |
| Lakewood Country Club | 501(c)(7) | 1962 | $11.2 million | $18.7 million | 2025-03 | |
| Cancer Research America NFCR Inc | Medical research | 501(c)(3) | 2010 | $11.1 million | $12.3 million | 2024-12 |
| American Society of Human Genetics | 501(c)(3) | 1985 | $10.7 million | $26.2 million | 2025-06 | |
| Kids After Hours Child Care Centers | Human services | 501(c)(3) | 2020 | $10.5 million | $2.2 million | 2024-12 |
| Victory Housing Inc | Housing and shelter | 501(c)(3) | 1982 | $9.9 million | $67.3 million | 2024-12 |
| Montgomery College Foundation Inc | Education | 501(c)(3) | 1983 | $9.8 million | $112.8 million | 2025-06 |
| Heart Failure Society of America Inc | Medical research | 501(c)(3) | 1997 | $9.5 million | $9.8 million | 2025-12 |
| Ring House Corporation | Housing and shelter | 501(c)(3) | 1987 | $9.2 million | $27.3 million | 2024-12 |
| Move United | Recreation and sports | 501(c)(3) | 1976 | $9 million | $7 million | 2025-09 |
| Finra Investor Education Foundation | Community improvement and capacity building | 501(c)(4) | 2004 | $8.9 million | $85.6 million | 2024-12 |
| Montgomery Child Care Association Inc | Human services | 501(c)(3) | 1966 | $8.8 million | $9.4 million | 2025-08 |
| American Society for Nutrition Inc | Food, agriculture and nutrition | 501(c)(3) | 1997 | $8.4 million | $13.7 million | 2024-12 |
| National Foundation for Affordable Housing Solutions Inc | Housing and shelter | 501(c)(3) | 1995 | $8.4 million | $274.8 million | 2024-12 |
| Atlantic Gateway Communications Inc | Arts, culture and humanities | 501(c)(3) | 2019 | $8.2 million | $22 million | 2025-12 |
| Westminster Ingleside King Farm Presbyterian Retirement Communitie | Crime and legal-related | 501(c)(3) | 2012 | $8.2 million | $5.2 million | 2024-12 |
| Jewish Camp and Conference Service Inc | 501(c)(3) | 1988 | $7.9 million | $17.8 million | 2024-12 | |
| Head Injury Rehabilitation and Referral Services Inc | Diseases, disorders and medical disciplines | 501(c)(3) | 1992 | $7.2 million | $7.6 million | 2025-06 |
| Green Acres School Inc | Education | 501(c)(3) | 1938 | $7.2 million | $12.2 million | 2025-06 |
| Jewish Council for the Aging of Greater Washington Inc | Human services | 501(c)(3) | 1973 | $7.2 million | $9.2 million | 2025-06 |
| Executive Child Development Center | Human services | 501(c)(3) | 1986 | $7.2 million | $8.3 million | 2024-12 |
| Aoac International | Medical research | 501(c)(3) | 1997 | $7.2 million | $9.5 million | 2025-12 |
| American Society for Cell Biology | 501(c)(3) | 1966 | $7.1 million | $15.1 million | 2024-12 | |
| Montgomery County Education Association Inc | 501(c)(5) | 1992 | $7.1 million | $10.1 million | 2025-08 | |
| Biomedical Research Institute | 501(c)(3) | 1949 | $6.9 million | $21.4 million | 2025-12 | |
| American Society for Pharmacology and Experimental Therapeutics Inc | Health care | 501(c)(3) | 1938 | $6.7 million | $31.1 million | 2024-12 |
| Mobile Medical Care Inc | Health care | 501(c)(3) | 1969 | $6.7 million | $2.5 million | 2025-06 |
| Montgomery County Collaboration Council | Health care | 501(c)(3) | 2004 | $6.7 million | $4 million | 2025-06 |
| The Stanley Medical Research Institute | Medical research | 501(c)(3) | 2001 | $6.3 million | $93.3 million | 2024-12 |
| Association for Molecular Pathology Inc | Education | 501(c)(3) | 1999 | $6.3 million | $15.5 million | 2024-12 |
| Westminster Ingleside Presbyterian Foundation | Housing and shelter | 501(c)(3) | 1999 | $6.2 million | $34.2 million | 2024-12 |
| Save A Childs Heart Foundation Us I NC | 501(c)(3) | 1993 | $6.1 million | $4.1 million | 2024-12 | |
| Association of Immunization Managers | Diseases, disorders and medical disciplines | 501(c)(3) | 2001 | $6 million | $5.3 million | 2025-09 |
| American Society of Plant Biologists | 501(c)(3) | 1976 | $5.9 million | $22.6 million | 2024-12 | |
| Genetics Society of America Incorporated | 501(c)(3) | 1985 | $5.9 million | $16.7 million | 2024-12 | |
| Medical Professional Liability Association | 501(c)(6) | 1982 | $5.8 million | $5.1 million | 2024-12 | |
| Autism Society of America Inc | 501(c)(3) | 1992 | $5.8 million | $2.4 million | 2024-12 | |
| Revitz House Corporation | Housing and shelter | 501(c)(3) | 1979 | $5.7 million | $14.7 million | 2024-12 |
| Montgomery County Economic Development Corporation | Community improvement and capacity building | 501(c)(3) | 2017 | $5.1 million | $4.2 million | 2025-06 |
| Naaso the Obesity Society Inc | 501(c)(3) | 1988 | $4.9 million | $8.5 million | 2024-12 | |
| Technology Council of Maryland Inc | Community improvement and capacity building | 501(c)(6) | 2008 | $4.8 million | $4 million | 2025-06 |
| National Park Trust Inc | Environment | 501(c)(3) | 1991 | $4.7 million | $8.6 million | 2025-06 |
| Biohealth Innovation Inc | Medical research | 501(c)(3) | 2012 | $4.4 million | $5.3 million | 2024-12 |
| Association of Schools and Colleges of Optometry Inc | Education | 501(c)(3) | 1975 | $4.1 million | $13.3 million | 2025-06 |
| King Farm Citizens Assembly Inc | Housing and shelter | 501(c)(4) | 2008 | $4.1 million | $6 million | 2025-12 |
| American Occupational Therapy Foundation Inc | 501(c)(3) | 1967 | $3.9 million | $41 million | 2025-09 | |
| American Association for Anatomy | Science and technology | 501(c)(3) | 1948 | $3.7 million | $15.5 million | 2024-12 |
| Montgomery County Humane Society Inc | Animal-related | 501(c)(3) | 1974 | $3.6 million | $14.2 million | 2025-06 |
| The Metropolitan Center for the Visual Arts Inc | Arts, culture and humanities | 501(c)(3) | 1990 | $3.6 million | $935,779 | 2025-06 |
| Capreit Welfare Benefit Trust | 501(c)(9) | 1996 | $3.6 million | $1.7 million | 2025-01 | |
| Housing Unlimited Inc | Housing and shelter | 501(c)(3) | 1992 | $3.5 million | $18 million | 2025-09 |
| Conference and Visitors Bureau of Montgomery County MD Inc | 501(c)(6) | 1990 | $3.4 million | $3.8 million | 2025-06 | |
| The Nasdaq Entrepreneurial Center Inc | Arts, culture and humanities | 501(c)(3) | 2014 | $3.3 million | $6.1 million | 2024-12 |
| Montgomery Comm Television Inc | Arts, culture and humanities | 501(c)(3) | 1986 | $3.3 million | $5.1 million | 2025-06 |
| Montgomery County Public Schools Educational Foundation Inc | Education | 501(c)(3) | 1990 | $3.3 million | $13.3 million | 2025-06 |
| Marian Assisted Living Inc | 501(c)(3) | 1946 | $3.3 million | $3.3 million | 2024-12 | |
| Transcen Inc | Employment | 501(c)(3) | 1988 | $3.3 million | $2.3 million | 2025-09 |
| Mechanical Contractors Association of Metropolitan Washington | 501(c)(6) | 1948 | $3.3 million | $7 million | 2024-12 | |
| Rockville Day Care Association Incorporated | Human services | 501(c)(3) | 1970 | $3.2 million | $3.4 million | 2024-12 |
| Aplastic Anemia & MDS International Foundation Inc | 501(c)(3) | 1984 | $3.2 million | $8.3 million | 2025-12 | |
| Renal Physicians Association | 501(c)(6) | 1974 | $3.1 million | $6.4 million | 2024-12 | |
| Nourish Now Foundation Inc | Food, agriculture and nutrition | 501(c)(3) | 2011 | $3 million | $518,480 | 2024-12 |
| Bartholomew House Inc | 501(c)(3) | 1946 | $2.8 million | $3.1 million | 2024-12 | |
| Byron House Inc | 501(c)(3) | 1946 | $2.7 million | $3.4 million | 2024-12 | |
| Sulam Inc | Human services | 501(c)(3) | 1999 | $2.7 million | $1.4 million | 2025-06 |
| Grace House Inc | 501(c)(3) | 1946 | $2.7 million | $3.8 million | 2024-12 | |
| Montgomery Coalition for Adultenglish Literacy Inc | Education | 501(c)(3) | 2008 | $2.6 million | $542,014 | 2025-06 |
| Collegetracks Inc | Education | 501(c)(3) | 2006 | $2.6 million | $546,170 | 2025-06 |
| Raphael Inc | Human services | 501(c)(3) | 1991 | $2.6 million | $2.1 million | 2024-12 |
| Montgomery County Chamber Foundation Inc | Human services | 501(c)(3) | 2009 | $2.5 million | $1.3 million | 2025-06 |
| Christian Church Facilities for the Aging Inc | Housing and shelter | 501(c)(3) | 1951 | $2.4 million | $4.6 million | 2024-12 |
| Rockville Institute A Research Institute for the Advancement of S | Social science | 501(c)(3) | 2006 | $2.4 million | $7.6 million | 2024-12 |
| Montgomery County Childrens Opportunity Alliance Inc | Education | 501(c)(3) | 2022 | $2.4 million | $690,504 | 2025-06 |
| Community Reach of Montgomery County Inc | Human services | 501(c)(3) | 1988 | $2.4 million | $2.9 million | 2025-06 |
| Alef Bet Montessori School Inc | Education | 501(c)(3) | 2007 | $2.3 million | $3.2 million | 2025-07 |
| Montgomery County Chamber of Commerce | 501(c)(6) | 1981 | $2.3 million | $1.9 million | 2025-06 | |
| International Municipal Lawyers Association Inc | 501(c)(3) | 1990 | $2.3 million | $2.9 million | 2025-06 | |
| Koa Sports League Inc | Recreation and sports | 501(c)(3) | 2010 | $2.3 million | $1.6 million | 2024-12 |
| Malta House Inc | 501(c)(3) | 1946 | $2.3 million | $1.7 million | 2024-12 | |
| Association of Water Technologies | Community improvement and capacity building | 501(c)(6) | 2003 | $2.3 million | $1.6 million | 2024-12 |
| Sunflower Bakery Inc | Employment | 501(c)(3) | 2009 | $2.3 million | $2.7 million | 2025-06 |
| Bethesda Chevy Chase Baseball Inc | Recreation and sports | 501(c)(3) | 1993 | $2.3 million | $2.6 million | 2025-12 |
| Council of State Administrators of Vocational Rehabilitation | Employment | 501(c)(3) | 1967 | $2.2 million | $2.7 million | 2025-06 |
| Primary Montessori Day School | Education | 501(c)(3) | 1999 | $2.2 million | $2.1 million | 2025-07 |
| Rockville Economic Development Inc | Community improvement and capacity building | 501(c)(3) | 1998 | $2.2 million | $2 million | 2025-06 |
| The Greater Washington Jewish Coalition Against Domestic Abuse | Human services | 501(c)(3) | 2001 | $2.2 million | $1.6 million | 2025-06 |
| American Speech-Language-Hearing Foundation | Medical research | 501(c)(3) | 1948 | $2.1 million | $23.9 million | 2024-12 |
| American Society for Investigative Pathology Inc | Medical research | 501(c)(3) | 1968 | $2.1 million | $3.3 million | 2024-12 |
| American Board of Medical Genetics and Genomics Inc | 501(c)(6) | 1981 | $2.1 million | $3.9 million | 2024-12 | |
| Ingleside at Home Inc | Health care | 501(c)(3) | 2015 | $1.9 million | $1.1 million | 2024-12 |
| Tree House Child Advocacy Center of Montgomery County MD Inc | Mental health and crisis intervention | 501(c)(3) | 2017 | $1.8 million | $197,126 | 2025-06 |
| National Philharmonic Orchestra & Chorale of Mongomery County Inc | Arts, culture and humanities | 501(c)(3) | 1984 | $1.8 million | $757,526 | 2025-06 |
| Friends of the Library Montgomery County MD Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1995 | $1.7 million | $3.3 million | 2025-06 |
| The Institute of Hazardous Materials Management | 501(c)(6) | 1985 | $1.7 million | $1.7 million | 2024-12 | |
| Society for Developmental Biology Inc | Science and technology | 501(c)(3) | 1971 | $1.6 million | $8.8 million | 2024-12 |
| Young Artists of America Inc | Arts, culture and humanities | 501(c)(3) | 2012 | $1.6 million | $1.4 million | 2025-06 |
| Geoprofessional Business Association | 501(c)(6) | 1971 | $1.6 million | $1.8 million | 2025-04 | |
| Aim-Hi Accelerator Fund Inc | Medical research | 501(c)(3) | 2019 | $1.6 million | $16.1 million | 2024-12 |
| Bikes for the World Inc | Human services | 501(c)(3) | 2011 | $1.6 million | $491,050 | 2025-06 |
| Rockville Volunteer Fire Dept Inc | Public safety, disaster preparedness and relief | 501(c)(3) | 2023 | $1.5 million | $14 million | 2025-06 |
| American Association of Colleges of Podiatric Medicine | Education | 501(c)(3) | 1989 | $1.5 million | $2.1 million | 2025-06 |
| American Association On Health and Disability Inc | Medical research | 501(c)(3) | 1995 | $1.5 million | $1.5 million | 2025-12 |
| Victory Court Inc | 501(c)(3) | 1946 | $1.5 million | $11.9 million | 2024-12 | |
| Main Street Connect Inc | Housing and shelter | 501(c)(3) | 2017 | $1.5 million | $10.8 million | 2025-12 |
| Registration Nation | Civil rights, social action and advocacy | 501(c)(3) | 2022 | $1.5 million | $553,420 | 2025-12 |
| American College of Dentists Inc | 501(c)(6) | 1985 | $1.5 million | $3.9 million | 2025-12 | |
| Driving Force Group Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2012 | $1.5 million | $818,247 | 2024-12 |
| Mechanical Contracting Foundation Inc | 501(c)(3) | 1990 | $1.4 million | $16.5 million | 2024-12 | |
| Team River Runner Inc | Environment | 501(c)(3) | 2014 | $1.4 million | $1.6 million | 2024-12 |
| Classroom 2 Community Inc | Education | 501(c)(3) | 1968 | $1.4 million | $681,296 | 2025-06 |
| Residential Continuum Inc | Human services | 501(c)(3) | 1982 | $1.4 million | $10.1 million | 2025-06 |
| International Association of Fire Fighters | 501(c)(5) | 1940 | $1.3 million | $2.2 million | 2024-12 | |
| Bikur Cholim of Greater Washington Inc | Community improvement and capacity building | 501(c)(3) | 1998 | $1.3 million | $3.3 million | 2024-12 |
| Stepping Stones Shelter Inc | Housing and shelter | 501(c)(3) | 1983 | $1.2 million | $2 million | 2025-06 |
| American Association of State Compensation Insurance Funds | 501(c)(6) | 1975 | $1.2 million | $1.3 million | 2025-12 | |
| Association for Persons in Supported Employment | 501(c)(6) | 1993 | $1.2 million | $687,913 | 2025-09 | |
| Leadership Montgomery Educational Foundation Inc | Public and societal benefit | 501(c)(3) | 1990 | $1.1 million | $1.9 million | 2025-06 |
| American Latvian Association in the United States Inc | Arts, culture and humanities | 501(c)(3) | 1952 | $1.1 million | $9 million | 2024-12 |
| Montgomery County Historical Society Inc | Arts, culture and humanities | 501(c)(3) | 1951 | $1.1 million | $5.3 million | 2025-06 |
| All Star Aquatics | Recreation and sports | 501(c)(3) | 2005 | $1.1 million | $821,356 | 2025-06 |
| Raps Affiliate | Community improvement and capacity building | 501(c)(6) | 2017 | $1.1 million | $7.4 million | 2025-12 |
| Trinity Terrace Inc | 501(c)(3) | 1946 | $1.1 million | $4.5 million | 2024-12 | |
| Andrew Kim House Inc | Housing and shelter | 501(c)(3) | 1946 | $1.1 million | $4.8 million | 2024-12 |
| Girls On the Run of Montgomerycounty Inc | Recreation and sports | 501(c)(3) | 2007 | $1 million | $624,845 | 2025-06 |
| Coalition Homes Incorporated | Housing and shelter | 501(c)(3) | 2005 | $1 million | $6.1 million | 2025-06 |
| Montgomery County Association of Administrators and Principals | 501(c)(5) | 1983 | $1 million | $1 million | 2025-08 | |
| Victory Heights Inc | 501(c)(3) | 1946 | $1 million | $9.9 million | 2025-06 | |
| Ivymount Outreach Programs Inc | Education | 501(c)(3) | 2006 | $1 million | $420,179 | 2025-06 |
| Willow Oak Therapy Center Inc | Mental health and crisis intervention | 501(c)(3) | 1984 | $988,660 | $199,350 | 2024-12 |
| Us Center for Chinese Medicine By Bucm Incorporated | International, foreign affairs and national security | 501(c)(3) | 2016 | $988,343 | $1.1 million | 2025-12 |
| Rhe Properties Inc | Housing and shelter | 501(c)(3) | 2022 | $987,743 | $13.1 million | 2024-12 |
| FCGB Center of Excellence Inc | Youth development | 501(c)(3) | 2018 | $986,188 | $447,091 | 2024-12 |
| Tree of Hope Association Inc | Mental health and crisis intervention | 501(c)(3) | 2015 | $984,330 | $76,591 | 2024-12 |
| Future Link Inc | Human services | 501(c)(3) | 2008 | $984,090 | $1.5 million | 2025-06 |
| American Podiatric Medical Assoc Educational Foundation Inc | 501(c)(3) | 1983 | $970,101 | $9.8 million | 2025-05 | |
| Madison House Autism Foundation Inc | Health care | 501(c)(3) | 2009 | $934,343 | $9.6 million | 2024-12 |
| Us Travel Insurance Association Inc | Human services | 501(c)(6) | 2014 | $932,150 | $692,613 | 2024-12 |
| National Student Speech and Hearing Association Inc | Health care | 501(c)(3) | 1974 | $925,542 | $1.8 million | 2024-12 |
| Funders for Reproductive Equity Inc | Health care | 501(c)(3) | 1999 | $922,334 | $1.3 million | 2024-12 |
| Montgomery County Maryland Bar Foundation Inc | Crime and legal-related | 501(c)(3) | 1983 | $907,397 | $1.3 million | 2025-06 |
| International Papillomavirus Society Inc | Education | 501(c)(3) | 2002 | $901,694 | $1.2 million | 2025-12 |
| Pierre Fauchard Academy | 501(c)(6) | 1965 | $901,075 | $983,491 | 2025-12 | |
| Board of Nephrology Examiners | 501(c)(6) | 1976 | $897,423 | $841,557 | 2025-09 | |
| American Registry of Pathology | 501(c)(3) | 1978 | $873,875 | $868,476 | 2025-09 | |
| American College of Mortgage Attorneys Inc | 501(c)(6) | 1983 | $850,520 | $854,902 | 2024-12 | |
| Center for Transnational Environmental Accountability | International, foreign affairs and national security | 501(c)(3) | 2020 | $842,003 | $1.2 million | 2024-12 |
| American College of Dentists Foundation Inc | Health care | 501(c)(3) | 1973 | $812,451 | $10.2 million | 2025-12 |
| Avondale Park Apartments Inc | 501(c)(3) | 1946 | $800,699 | $3.2 million | 2024-12 | |
| Pinkney Innovation Complex for Science & Technology at Montgomery | Education | 501(c)(3) | 2012 | $795,306 | $11.6 million | 2025-06 |
| Rose Women S Foundation | International, foreign affairs and national security | 501(c)(3) | 2019 | $790,916 | $644,859 | 2024-12 |
| National Postdoctoral Assoication | Social science | 501(c)(3) | 2005 | $785,235 | $1.2 million | 2025-12 |
| Road Runners Club of America | Recreation and sports | 501(c)(3) | 1976 | $778,374 | $757,099 | 2024-12 |
| Youth Performance Institute Inc | Youth development | 501(c)(3) | 2023 | $776,324 | $413,109 | 2024-12 |
| Society for Research On Educational Effectiveness | Education | 501(c)(3) | 2010 | $765,553 | $533,541 | 2025-12 |
| International Energy Credit Association Inc | 501(c)(6) | 1979 | $761,620 | $617,836 | 2024-12 | |
| Victory Lakeside Inc | 501(c)(3) | 1946 | $734,594 | $3.3 million | 2024-12 | |
| Palmer Park Seniors Housing Inc | 501(c)(3) | 1946 | $711,074 | $3.4 million | 2024-12 | |
| Court Appointed Special Advocate Montgomery County Maryland Inc | Civil rights, social action and advocacy | 501(c)(3) | 1990 | $708,913 | $395,855 | 2025-06 |
| Shock Society | Human services | 501(c)(3) | 2020 | $703,377 | $2.1 million | 2024-12 |
| North American Association of Commencement Officers | Community improvement and capacity building | 501(c)(6) | 2004 | $695,514 | $524,536 | 2025-07 |
| American College of Health Care Administrators | Health care | 501(c)(3) | 1986 | $690,509 | $177,810 | 2024-09 |
| The Ivymount Foundation Inc | Education | 501(c)(3) | 2005 | $685,142 | $8.5 million | 2025-06 |
| Nami Montgomery County | Mental health and crisis intervention | 501(c)(3) | 1980 | $685,032 | $442,091 | 2025-06 |
| The Dsfederal Idea Foundation | Human services | 501(c)(3) | 2020 | $672,346 | $4.2 million | 2025-12 |
| Manor Apartments Inc | Human services | 501(c)(3) | 1991 | $660,050 | $1.9 million | 2024-12 |
| Winslow House Inc | 501(c)(3) | 1946 | $638,267 | $3.1 million | 2024-12 | |
| The Senior Connection of Montgomery County Inc | Human services | 501(c)(3) | 1995 | $637,580 | $368,773 | 2025-06 |
| Down Syndrome Network of Montgomery County Inc | Human services | 501(c)(3) | 2011 | $609,372 | $730,266 | 2025-12 |
| College Savings Foundation | Community improvement and capacity building | 501(c)(6) | 2005 | $608,541 | $325,711 | 2025-12 |
| Rockville Nursery School and Kindergarten Inc | 501(c)(3) | 1974 | $600,811 | $192,967 | 2025-08 | |
| American Wheat Mission Inc | 501(c)(3) | 1994 | $598,182 | $268,359 | 2024-12 | |
| Minnesota Society of Clinical Oncology | Community improvement and capacity building | 501(c)(6) | 2003 | $597,254 | $1.7 million | 2025-06 |
| National Christ Child Society Inc | 501(c)(3) | 1990 | $588,181 | $3.6 million | 2025-12 | |
| United Veterinary Services Association Inc | 501(c)(6) | 1987 | $587,978 | $972,551 | 2025-05 | |
| Friends of Rabbinical Academy for Advanced Jewish Studies Kol Simcha | Education | 501(c)(3) | 2006 | $585,826 | $1.2 million | 2024-12 |
| Oceanography Society | 501(c)(3) | 1989 | $582,517 | $468,184 | 2025-09 | |
| Commercial Real Estate Brokerage Association of Greater Washington | Community improvement and capacity building | 501(c)(6) | 2002 | $576,935 | $652,416 | 2024-12 |
| Ananda Marga Inc | International, foreign affairs and national security | 501(c)(3) | 1972 | $569,034 | $113,890 | 2024-12 |
| Fibroid Foundation | Health care | 501(c)(3) | 2015 | $564,183 | $335,083 | 2024-06 |
| Hamere Berhan Kedus Yohannes Metmek Ye Ethiopia Orthodox Tewahido Bet | Religion-related | 501(c)(3) | 2020 | $556,455 | $1.8 million | 2023-12 |
| Potomac Woods Swim Club Inc | 501(c)(7) | 1967 | $555,235 | $913,855 | 2025-03 | |
| Mission Belonging Inc | 501(c)(3) | 2017 | $547,753 | $269,800 | 2024-12 | |
| Wisconsin Association of Medical Oncologists Inc | Community improvement and capacity building | 501(c)(6) | 2012 | $545,373 | $1 million | 2024-12 |
| Rainbow Place Shelter for Homeless Women Inc | Housing and shelter | 501(c)(3) | 2016 | $545,070 | $868,740 | 2025-06 |
| Rockville Community Nursery School Incorporated | Education | 501(c)(3) | 1965 | $542,935 | $536,188 | 2025-06 |
| Montgomery County Fire-Rescue Association | 501(c)(4) | 1986 | $540,276 | $362,784 | 2025-06 | |
| Bar Association of Montgomery County Maryland | 501(c)(6) | 1969 | $537,205 | $353,931 | 2025-06 | |
| Victory Crest Inc | 501(c)(3) | 1946 | $535,041 | $5.3 million | 2024-12 | |
| Hawaii Society of Clinical Oncology | 501(c)(6) | 1997 | $532,707 | $1.2 million | 2024-12 | |
| The North Carolina Oncology Association | Community improvement and capacity building | 501(c)(6) | 2004 | $528,720 | $911,086 | 2024-12 |
| Rockville Pregnancy Center Inc | Health care | 501(c)(3) | 1987 | $527,988 | $492,358 | 2024-12 |
| Histochemical Society Inc | Science and technology | 501(c)(3) | 1966 | $521,375 | $4.7 million | 2024-12 |
| Communication Health Support Associ Ation Inc Maryland | Health care | 501(c)(3) | 1937 | $519,681 | $3.5 million | 2024-12 |
| Victory Oaks Inc | 501(c)(3) | 1946 | $510,214 | $5.8 million | 2024-12 | |
| Arizona Clinical Oncology Society Inc | 501(c)(6) | 1993 | $495,220 | $775,396 | 2025-06 | |
| Your Dogs Friend Inc | Animal-related | 501(c)(3) | 2006 | $476,112 | $643,380 | 2025-12 |
| National Alliance for Eye and Vision Research Inc | 501(c)(4) | 1997 | $468,671 | $1.5 million | 2024-12 | |
| The Guru Gobind Singh Foundation | Religion-related | 501(c)(3) | 2013 | $465,009 | $1.3 million | 2024-12 |
| Internet Commerce Association | Community improvement and capacity building | 501(c)(6) | 2017 | $462,094 | $440,373 | 2024-12 |
| Jewish Foundation for Group Homesendowment Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2006 | $459,076 | $17.8 million | 2025-06 |
| Zionist Rabbinic Coalition Inc | Religion-related | 501(c)(3) | 2021 | $458,248 | $417,995 | 2025-12 |
| Texas Society of Clinical Oncology | 501(c)(6) | 1988 | $451,572 | $791,546 | 2024-12 | |
| Washington State Medical Oncology Society | Community improvement and capacity building | 501(c)(6) | 2003 | $446,385 | $1.2 million | 2025-06 |
| Victory Brookside Inc | 501(c)(3) | 1946 | $441,535 | $1.3 million | 2024-12 | |
| Peerless Rockville Historic Preservation LTD | Arts, culture and humanities | 501(c)(3) | 1980 | $438,344 | $1.2 million | 2025-06 |
| Montgomery County Medical Society | 501(c)(6) | 1960 | $437,355 | $1.5 million | 2025-12 | |
| Cambridge Apts Inc | 501(c)(3) | 1946 | $436,673 | $1.8 million | 2024-12 | |
| National Organization of Bar Counsel Inc | 501(c)(6) | 1978 | $433,916 | $293,446 | 2025-08 | |
| Early Childhood Center Inc | Human services | 501(c)(3) | 1974 | $430,955 | $572,164 | 2025-07 |
| Greater Rockville Chamber of Commerce Inc | 501(c)(6) | 1957 | $428,475 | $209,663 | 2025-12 | |
| Aish Hatorah | 501(c)(3) | 1991 | $427,442 | $411,120 | 2025-12 | |
| South Carolina Oncology Society | 501(c)(3) | 1998 | $420,863 | $972,011 | 2024-12 | |
| New Neighbor Interfaith Alliance Inc | Human services | 501(c)(3) | 2023 | $410,321 | $97,705 | 2025-12 |
| Tennessee Oncology Practice Society | Diseases, disorders and medical disciplines | 501(c)(6) | 2005 | $410,186 | $645,390 | 2024-12 |
| Cheval Court Inc | 501(c)(3) | 1946 | $399,243 | $2.8 million | 2024-12 | |
| Hope Chinese School Inc | Education | 501(c)(3) | 1998 | $398,354 | $586,276 | 2025-12 |
| Montgomery Square-Copenhaver Swim Club Inc | 501(c)(7) | 1967 | $396,234 | $823,438 | 2025-10 | |
| Amvets Charities Inc | 501(c)(3) | 1980 | $394,589 | $2.3 million | 2024-12 | |
| Rockville Nursing Home Inc | Health care | 501(c)(3) | 1973 | $383,644 | $6.9 million | 2025-06 |
| Eternal Voice Inc | Religion-related | 501(c)(3) | 2017 | $379,600 | $1.1 million | 2024-12 |
| Nonprofit Montgomery Inc | Community improvement and capacity building | 501(c)(3) | 2018 | $377,483 | $209,684 | 2025-06 |
| Manor Woods Swim Club Inc | 501(c)(7) | 1969 | $368,647 | $602,320 | 2025-01 | |
| Rockville-Olney Soccer Academy Inc | Recreation and sports | 501(c)(3) | 2021 | $368,557 | $44,443 | 2023-06 |
| Benevolent & Protective Order of Elks of the USA | 501(c)(8) | 1951 | $367,221 | $2.6 million | 2026-03 | |
| Rocky Mountain Oncology Society Inc | 501(c)(3) | 1992 | $364,556 | $1.1 million | 2024-12 | |
| The Iowa Oncology Society | Community improvement and capacity building | 501(c)(6) | 2004 | $361,132 | $771,372 | 2024-12 |
| Teach-The-World Foundation Inc | Education | 501(c)(3) | 2019 | $361,071 | $143,947 | 2025-12 |
| American Society for Nutrition Foundation Inc | Food, agriculture and nutrition | 501(c)(3) | 2013 | $358,893 | $561,053 | 2024-12 |
| The Haberman Institute for Jewish Studies | Religion-related | 501(c)(3) | 1983 | $354,954 | $2 million | 2025-06 |
| American Academy of Appellate Lawyers Inc | 501(c)(6) | 1991 | $354,298 | $427,684 | 2024-12 | |
| National Association of Letter Carriers | 501(c)(5) | 1955 | $346,210 | $196,519 | 2024-12 | |
| American Turkish Association Inc | Arts, culture and humanities | 501(c)(3) | 2013 | $340,520 | $1.2 million | 2025-12 |
| National Gaucher Foundation Inc | Diseases, disorders and medical disciplines | 501(c)(3) | 1984 | $316,069 | $825,417 | 2025-12 |
| Vedic Health Inc | Recreation and sports | 501(c)(3) | 2018 | $313,999 | $293,340 | 2025-12 |
| Health Solutions Research Incorporated | Health care | 501(c)(3) | 2014 | $310,681 | $226,410 | 2023-12 |
| Latvijas Brivibas Fonds LTD | International, foreign affairs and national security | 501(c)(3) | 1987 | $308,968 | $2.9 million | 2024-12 |
| Air Conditioning Association of New England Inc | Community improvement and capacity building | 501(c)(6) | 2009 | $307,336 | $100,849 | 2025-06 |
| Chinese American Senior Services Association Inc | Human services | 501(c)(3) | 2006 | $307,288 | $548,812 | 2025-12 |
| Miris Legacy Inc | Animal-related | 501(c)(3) | 2022 | $305,286 | $27,747 | 2024-12 |
| Construction Contractors Council | 501(c)(6) | 1950 | $301,039 | $932,567 | 2025-12 | |
| Shree Mata Darbar Inc | Religion-related | 501(c)(3) | 2008 | $300,680 | $1.8 million | 2025-12 |
| Louisiana Oncology Society | 501(c)(3) | 1994 | $300,467 | $462,283 | 2024-12 | |
| American Society for Matrix Biology | Science and technology | 501(c)(3) | 2000 | $297,649 | $475,591 | 2025-12 |
| Rockville Cemetery Association Inc | Mutual and membership benefit | 501(c)(13) | 2003 | $294,253 | $970,656 | 2023-12 |
| Axys | 501(c)(3) | 1996 | $294,021 | $529,564 | 2025-12 | |
| Jcrafts By Chabad Inc | Religion-related | 501(c)(3) | 2012 | $291,133 | $24,884 | 2025-12 |
| Pike District Partnership Inc | Community improvement and capacity building | 501(c)(6) | 2024 | $288,246 | $205,322 | 2025-09 |
| Empire State Hematology & Oncology Society Inc | Community improvement and capacity building | 501(c)(6) | 2017 | $287,100 | $746,536 | 2025-06 |
| Hickory Cluster Association | 501(c)(4) | 1970 | $284,490 | $1.6 million | 2024-12 | |
| A R Bancroft Community Development Corporation | 501(c)(4) | 1980 | $283,725 | $2.4 million | 2025-06 | |
| Rockville Presbyterian Cooperative Nursery School | Education | 501(c)(3) | 2000 | $282,742 | $288,688 | 2025-06 |
| HST Cultural Arts Inc | Arts, culture and humanities | 501(c)(3) | 2001 | $281,929 | $29,561 | 2026-06 |
| Small Things Matter Inc | Youth development | 501(c)(3) | 2017 | $280,024 | $219,925 | 2025-12 |
| Empowering the Ages Inc | Youth development | 501(c)(3) | 2019 | $276,006 | $76,783 | 2025-06 |
| Rockville Meals On Wheels Inc | 501(c)(3) | 1983 | $274,701 | $153,719 | 2025-12 | |
| Onyx Cares Foundation Inc | Youth development | 501(c)(3) | 2023 | $273,109 | $253,817 | 2024-12 |
| RMSC Parents Club | Recreation and sports | 501(c)(3) | 2025 | $272,859 | $86,119 | 2025-12 |
| Inteleos Foundation | Health care | 501(c)(3) | 2022 | $267,449 | $341,290 | 2024-12 |
| World Federation of Free Latvians | International, foreign affairs and national security | 501(c)(3) | 1983 | $266,852 | $239,425 | 2024-12 |
| County Engineers Association of Maryland | 501(c)(6) | 1983 | $265,421 | $180,707 | 2025-06 | |
| Alliance for Eye and Vision Research Inc | Health care | 501(c)(3) | 1994 | $262,875 | $441,242 | 2024-12 |
| Tilden Woods Recreation Association Inc | 501(c)(7) | 1964 | $261,537 | $227,023 | 2023-12 | |
| Montgomery County Career Fire Fighters Charitable Fundation Inc | Public and societal benefit | 501(c)(3) | 2018 | $247,759 | $209,028 | 2025-12 |
| Weestar Corporation | Arts, culture and humanities | 501(c)(3) | 2011 | $243,578 | $133,332 | 2025-12 |
| West Virginia Oncology Society | Community improvement and capacity building | 501(c)(6) | 2009 | $240,125 | $250,578 | 2024-12 |
| Indiana Oncology Society | Community improvement and capacity building | 501(c)(6) | 2010 | $239,815 | $372,741 | 2025-06 |
| Montgomery Co Fam Justice Center Foundation Inc | Recreation and sports | 501(c)(3) | 2009 | $229,629 | $207,330 | 2025-06 |
| Apse Foundation | Human services | 501(c)(3) | 1996 | $229,438 | $236,679 | 2025-09 |
| St Lukes Homes Inc | 501(c)(3) | 1990 | $228,046 | $418,359 | 2025-06 | |
| Association of Russian Speaking Theatres Corporation | Arts, culture and humanities | 501(c)(3) | 2017 | $226,802 | $9,197 | 2025-12 |
| Marlow Guitar International Incorporated | Arts, culture and humanities | 501(c)(3) | 2015 | $225,189 | $50,213 | 2025-06 |
| Kentucky Society of Clinical Oncology Inc | Medical research | 501(c)(6) | 2009 | $224,985 | $525,807 | 2024-12 |
| Twinbrook Swimming Pool Corp | 501(c)(7) | 1957 | $223,771 | $2.6 million | 2025-12 | |
| International Federation of Technical Analysts | 501(c)(6) | 1987 | $221,030 | $592,527 | 2025-12 | |
| Nevada Oncology Society | Community improvement and capacity building | 501(c)(6) | 2003 | $220,216 | $617,381 | 2025-06 |
| Won Buddhism of the USA Inc | Religion-related | 501(c)(3) | 1991 | $218,674 | $2.5 million | 2024-12 |
| Fraternity of Saint Joseph Guardian Inc | Human services | 501(c)(3) | 2010 | $217,537 | $171,730 | 2025-12 |
| Rockville Lodge No 1540 Loyal Order of Moose | 501(c)(8) | 1935 | $212,650 | $317,501 | 2025-04 | |
| USA Ball Hockey Foundation Inc | Recreation and sports | 501(c)(3) | 2019 | $211,622 | $0 | 2025-12 |
| Photo Chemical Machining Institute | 501(c)(6) | 1971 | $210,841 | $97,694 | 2024-12 | |
| The Korean American Senior Citizens Association Inc | Human services | 501(c)(3) | 1992 | $209,360 | $300,252 | 2025-12 |
| Alsabeel Community Center Inc | Education | 501(c)(3) | 2023 | $207,862 | $1.4 million | 2025-12 |
| New Mexico Society of Clinical Oncology | Education | 501(c)(3) | 1996 | $207,711 | $353,318 | 2024-12 |
| League of Women Voters of Montgomery County MD Inc | Civil rights, social action and advocacy | 501(c)(3) | 2017 | $207,317 | $548,720 | 2025-06 |
| Foundation To Fight H-Abc | Human services | 501(c)(3) | 2016 | $206,326 | $501,012 | 2024-12 |
| Rockville Science Center Inc | Arts, culture and humanities | 501(c)(3) | 2010 | $204,680 | $127,931 | 2024-12 |
| Montgomery Preservation Inc | 501(c)(3) | 1985 | $201,093 | $1.1 million | 2025-06 | |
| Cause | 501(c)(5) | 1987 | $199,996 | $57,279 | 2024-12 | |
| Amity Club Inc | 501(c)(7) | 1942 | $198,533 | $56,403 | 2024-12 | |
| Research for A Cure | Medical research | 501(c)(3) | 2002 | $194,994 | $100,583 | 2025-12 |
| The Foundation for the Maryland Commission for Women Inc | Public and societal benefit | 501(c)(3) | 2018 | $192,692 | $165,343 | 2025-12 |
| Kansas Society of Clinical Oncology | Community improvement and capacity building | 501(c)(6) | 2011 | $188,614 | $574,110 | 2024-12 |
| International Federation of Dental Hygienists Inc | Community improvement and capacity building | 501(c)(6) | 2015 | $184,875 | $128,871 | 2025-12 |
| Taiwanese Association of America Inc | 501(c)(3) | 1988 | $181,880 | $156,158 | 2024-12 | |
| Visionary Ophthalmology Foundation Inc | International, foreign affairs and national security | 501(c)(3) | 2011 | $181,632 | $61,619 | 2024-12 |
| Autism Society of America Foundation Inc | Diseases, disorders and medical disciplines | 501(c)(3) | 1997 | $181,121 | $827,769 | 2024-12 |
| Open Circle Theatre Inc | Arts, culture and humanities | 501(c)(3) | 2004 | $177,550 | $104,729 | 2024-12 |
| Washington School of Chinese Language & Culture | Arts, culture and humanities | 501(c)(3) | 1986 | $171,994 | $853,322 | 2025-08 |
| Montgomerys Miracles Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2006 | $162,335 | $334,272 | 2025-12 |
| Lovepaws | Animal-related | 501(c)(3) | 2019 | $162,179 | $91,737 | 2024-12 |
| Bentana Woods West Cluster Association | 501(c)(4) | 1975 | $161,562 | $343,073 | 2025-10 | |
| Latvian Evangelical Lutheran Church Home for the Elderly Inc | Housing and shelter | 501(c)(3) | 1990 | $161,518 | $1.4 million | 2024-12 |
| Student Professionalism and Ethics Association in Dentistry | Community improvement and capacity building | 501(c)(6) | 2025 | $151,961 | $2,500 | 2025-12 |
| Technology Council of Maryland Foundation Inc | Community improvement and capacity building | 501(c)(3) | 1989 | $147,000 | $78,533 | 2025-06 |
| Rockville Musical Theatre | Public safety, disaster preparedness and relief | 501(c)(3) | 2008 | $145,202 | $176,091 | 2025-12 |
| Interfaith Housing Coalition Inc | 501(c)(3) | 2026 | $144,513 | $4 million | 2025-06 | |
| Create Calm Inc | Education | 501(c)(3) | 2016 | $142,172 | $46,096 | 2025-12 |
| Coordination Council of Chinese American Associations Inc | Arts, culture and humanities | 501(c)(3) | 2003 | $138,518 | $183,376 | 2025-12 |
| Aspen Hill Nursery School Inc | Education | 501(c)(3) | 1961 | $136,719 | $87,244 | 2025-06 |
| Second Step Inc | Housing and shelter | 501(c)(3) | 1991 | $132,316 | $974,605 | 2025-06 |
| Victorian Lyric Opera Company | Arts, culture and humanities | 501(c)(3) | 2007 | $131,280 | $276,792 | 2025-06 |
| Joint Baltic American National Committee | Human services | 501(c)(4) | 2002 | $130,770 | $71,204 | 2023-06 |
| Petey and Furends Inc | Animal-related | 501(c)(3) | 2020 | $130,737 | $108,060 | 2025-12 |
| Taiwan-Us Cultural Association Inc | Arts, culture and humanities | 501(c)(3) | 2017 | $128,000 | $72,766 | 2024-12 |
| Missouri Oncology Society | Community improvement and capacity building | 501(c)(6) | 2005 | $126,505 | $386,738 | 2024-12 |
| Mahamevnawa Meditation Center of Greater Washington DC | Religion-related | 501(c)(3) | 2012 | $125,847 | $485,815 | 2025-12 |
| Unicare Medical Solutions Inc | Education | 501(c)(3) | 2017 | $125,224 | $40,755 | 2024-12 |
| Montana State Oncology Society | Community improvement and capacity building | 501(c)(6) | 2015 | $124,000 | $204,088 | 2024-12 |
| Mastersingers USA Inc | Arts, culture and humanities | 501(c)(3) | 2018 | $123,881 | $23,842 | 2025-12 |
| Rhythm Visions Production Company Inc | Arts, culture and humanities | 501(c)(3) | 2014 | $123,350 | $84,355 | 2025-12 |
| Iran Cultural & Educational Center Inc | 501(c)(3) | 1991 | $120,052 | $538,560 | 2025-06 | |
| Washington DC Lindy Exchange Inc | Arts, culture and humanities | 501(c)(3) | 2023 | $119,760 | $41,024 | 2024-12 |
| Friday Night Dancers Inc | Arts, culture and humanities | 501(c)(3) | 2000 | $118,436 | $88,584 | 2025-12 |
| Hugh Obrian Youth Leadership | Youth development | 501(c)(3) | 1958 | $116,408 | $223,659 | 2025-08 |
| In Christ Washington Church | Religion-related | 501(c)(3) | 2020 | $113,934 | $460,079 | 2020-12 |
| Global Collective | Human services | 501(c)(3) | 2015 | $111,256 | $263,104 | 2025-12 |
| Friends of the Palestinian Happy Child Centre | International, foreign affairs and national security | 501(c)(3) | 2021 | $110,167 | $66,781 | 2024-12 |
| Education Center Shalom Inc | Arts, culture and humanities | 501(c)(3) | 2005 | $108,183 | $5,284 | 2024-12 |
| Pediatric Pain Foundation Inc | Health care | 501(c)(3) | 2025 | $108,100 | $108,085 | 2025-12 |
| Prabalta Inc | Science and technology | 501(c)(3) | 2024 | $106,483 | $109,768 | 2024-12 |
| Progress Club Foundation Inc | Human services | 501(c)(3) | 2014 | $105,270 | $496,336 | 2024-12 |
| Rockville Little Theatre Inc | Arts, culture and humanities | 501(c)(3) | 1970 | $102,840 | $163,199 | 2026-06 |
| Shaolin Traditional Kung Fu Inc | Recreation and sports | 501(c)(3) | 2014 | $101,880 | $7,054 | 2025-12 |
| New Lakewood Scout Sponsors Inc | Youth development | 501(c)(3) | 2025 | $101,851 | $41,312 | 2025-08 |
| Adventures in Health Educational and Agricultural Development Inc | International, foreign affairs and national security | 501(c)(3) | 1987 | $99,921 | $136,456 | 2024-12 |
| Athlete Amplifier Foundation | Education | 501(c)(3) | 2025 | $95,432 | $138,332 | 2025-12 |
| Mattie J T Stepanek Foundation Inc | Diseases, disorders and medical disciplines | 501(c)(3) | 2006 | $95,068 | $289,028 | 2024-12 |
| Wyoming State Oncology Society | Diseases, disorders and medical disciplines | 501(c)(6) | 2021 | $95,000 | $89,784 | 2024-12 |
| Society for Muscle Biology Inc | Education | 501(c)(3) | 2003 | $94,828 | $109,860 | 2025-12 |
| Danish Club of Washington D C | 501(c)(4) | 1965 | $90,664 | $354,486 | 2025-12 | |
| Rpa Research & Education Foundation | Medical research | 501(c)(3) | 1991 | $87,336 | $572,812 | 2024-12 |
| Parent Booster USA Inc | Education | 501(c)(3) | 2005 | $84,570 | $66,930 | 2025-06 |
| Camp Kittimaquundi Inc | Recreation and sports | 501(c)(3) | 2006 | $83,352 | $8,873 | 2024-12 |
| Association of Practicing Certified Public Accountents | 501(c)(6) | 1973 | $81,376 | $58,049 | 2025-06 | |
| Iglesia Misionera Cristo Es La Roca Inc | Religion-related | 501(c)(3) | 2014 | $80,558 | $2,191 | 2023-12 |
| Rockville Rotary Club Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2000 | $78,795 | $491,622 | 2024-12 |
| Alpha Omega International Dental Fraternity | 501(c)(3) | $77,935 | $42,679 | 2025-06 | ||
| Image Guided Therapy Research Institute | Medical research | 501(c)(3) | 2025 | $77,000 | $28,099 | 2025-12 |
| Daejeon Global Business Center Corporation | Public and societal benefit | 501(c)(3) | 2025 | $76,140 | $6,928 | 2025-12 |
| Phoenix Computers Inc | Human services | 501(c)(3) | 2012 | $75,025 | $337,300 | 2026-06 |
| United Capital Blades Speedskating Club | Recreation and sports | 501(c)(3) | 2013 | $74,750 | $41,439 | 2025-03 |
| Institute of Intellectual Property & Social Justice Inc | Civil rights, social action and advocacy | 501(c)(3) | 2010 | $73,975 | $578,498 | 2025-12 |
| Creative Capital Impact Organization | Education | 501(c)(3) | 2020 | $72,128 | $1.6 million | 2024-12 |
| Giving Foundation for Women & Children Inc | Human services | 501(c)(3) | 2019 | $71,531 | $28,933 | 2025-12 |
| Waterside Homes Inc | Housing and shelter | 501(c)(3) | 2007 | $70,915 | $1.6 million | 2025-06 |
| Aurora Homes Inc | Housing and shelter | 501(c)(3) | 2007 | $70,692 | $737,642 | 2023-06 |
| Great Love Mission Church | 501(c)(3) | 1974 | $70,441 | $182,760 | 2024-12 | |
| Bible Ministry Foundation Inc of USA | 501(c)(3) | 1993 | $67,746 | $1.7 million | 2025-12 | |
| Woodley Gardens Community Swim and Recreation Association | Recreation and sports | 501(c)(3) | 2020 | $67,722 | $104,633 | 2025-12 |
| RMHS Athletic Booster Club Inc | Education | 501(c)(3) | 2014 | $67,380 | $41,622 | 2025-06 |
| Grass Roots Organization for the Well Being of Seniors Inc | Human services | 501(c)(3) | 1993 | $67,357 | $13,153 | 2024-12 |
| Help Evoke Joy Inc | Human services | 501(c)(3) | 2025 | $67,007 | $83,705 | 2025-12 |
| Affordable Housing Conference of Montgomery County | Housing and shelter | 501(c)(3) | 2005 | $66,875 | $488,393 | 2026-06 |
| Maryland School for Jewisheducation Inc | Education | 501(c)(3) | 2008 | $65,942 | $174,421 | 2025-05 |
| Discover Steam Incorporated | Education | 501(c)(3) | 2020 | $65,163 | $65,321 | 2025-12 |
| Out Came the Sun Foundation Inc | Health care | 501(c)(3) | 2008 | $64,602 | $3,451 | 2024-12 |
| QRP Amateur Radio Club International | Recreation and sports | 501(c)(7) | 2010 | $63,980 | $121,935 | 2026-03 |
| Believe in Belize | International, foreign affairs and national security | 501(c)(3) | 2019 | $62,438 | $65,685 | 2025-12 |
| Washington Metropolitan Gamer Symphony Orchestra | Arts, culture and humanities | 501(c)(3) | 2014 | $62,260 | $74,516 | 2024-12 |
| Potomac Valley Alumnae Chapter Fund Incorporated | 501(c)(3) | 1987 | $61,551 | $159,680 | 2025-12 | |
| Regional Institute for Children and Adolescents Rockville Association | 501(c)(3) | 1987 | $60,403 | $216,523 | 2025-06 | |
| Gojam Mutual Association-Edir-Felege Ghion- Inc | Mutual and membership benefit | 501(c)(3) | 2015 | $59,739 | $74,992 | 2025-12 |
| Taiwanese Association of America | 501(c)(3) | 1994 | $59,211 | $72,469 | 2024-12 | |
| Free State Roller Derby | Recreation and sports | 501(c)(3) | 2015 | $56,470 | $44,711 | 2025-12 |
| Veterans Health and Wellness Foundation Inc | Public and societal benefit | 501(c)(3) | 2014 | $56,056 | $123,366 | 2025-12 |
| Cantonese School of Greater Washington | Arts, culture and humanities | 501(c)(3) | 2014 | $54,344 | $114,773 | 2025-06 |
| American Legion Post 86 | 501(c)(19) | 1946 | $53,481 | $260,429 | 2024-12 | |
| Sakura Educational Exchanges USA Inc | Education | 501(c)(3) | 1991 | $52,926 | $1.1 million | 2025-03 |
| Cabanaconde City Colca USA Inc | Public and societal benefit | 501(c)(3) | 2012 | $52,815 | $344,538 | 2023-12 |
| Maryland Society of Oral and Maxillofacial Surgeons Inc | Community improvement and capacity building | 501(c)(6) | 2004 | $50,912 | $31,009 | 2025-12 |
| Action Information | Education | 501(c)(3) | 2022 | $50,000 | $34,638 | 2024-12 |
| Enatyi Bayech Childrens Integrated Development Organization Inc | International, foreign affairs and national security | 501(c)(3) | 2015 | $49,000 | $9,544 | 2025-12 |
| McAa Charitable Fund | Human services | 501(c)(3) | 2018 | $48,880 | $191,661 | 2025-12 |
| Rockville Robotics Inc | Youth development | 501(c)(3) | 2017 | $43,048 | $63,223 | 2025-06 |
| Second Step II Inc | 501(c)(3) | 2000 | $42,853 | $372,652 | 2025-06 | |
| Rockville Bike Hub | Human services | 501(c)(3) | 2015 | $41,949 | $122,250 | 2025-12 |
| The Kerala Association of Greater Washington | 501(c)(3) | 1983 | $41,003 | $375,110 | 2025-12 | |
| Call for Action Inc | Community improvement and capacity building | 501(c)(3) | 1992 | $39,972 | $736,815 | 2025-12 |
| Montgomery County Partners for Animal Well-Being Inc | Animal-related | 501(c)(3) | 2010 | $38,347 | $16,453 | 2024-12 |
| Silver Flower Homes Inc | Housing and shelter | 501(c)(3) | 2012 | $35,294 | $1.1 million | 2023-06 |
| Metro Club Inc | Mental health and crisis intervention | 501(c)(3) | 1997 | $34,819 | $11,075 | 2025-03 |
| Pta Delaware Congress | 501(c)(3) | 1971 | $33,894 | $33,827 | 2025-06 | |
| Pierre Fauchard Academy Leadership Foundation | Health care | 501(c)(3) | 2021 | $33,598 | $35,776 | 2025-12 |
| The JJ Metta Memorial Foundation Inc | International, foreign affairs and national security | 501(c)(3) | 2008 | $32,561 | $36,455 | 2024-12 |
| We United Foundation | Human services | 501(c)(3) | 2024 | $31,855 | $11,873 | 2025-12 |
| Ashmore Homes Inc | Housing and shelter | 501(c)(3) | 2008 | $31,435 | $768,473 | 2023-06 |
| Disaster Accountability Project | Public safety, disaster preparedness and relief | 501(c)(3) | 2008 | $30,428 | $1,574 | 2024-12 |
| Complete International | Public and societal benefit | 501(c)(3) | 2020 | $29,392 | $1,138 | 2025-12 |
| Pathways for Living Inc | Human services | 501(c)(3) | 2025 | $28,937 | $11,455 | 2016-06 |
| Widow Care Incorporated | Human services | 501(c)(3) | 2014 | $26,862 | $22,075 | 2023-12 |
| Trip McNealy Foundation | 501(c)(3) | 2018 | $26,588 | $3,000 | 2025-12 | |
| Russian Maryland Cultural Center | 501(c)(3) | 2009 | $25,000 | $42,126 | 2025-06 | |
| Apoyonline Association for Heritage Preservation of the Americas | Arts, culture and humanities | 501(c)(3) | 2009 | $24,965 | $198,835 | 2025-08 |
| Oxford Research Institute Inc | Science and technology | 501(c)(3) | 2000 | $24,095 | $245,508 | 2024-12 |
| Wootton Booster Club Inc | Education | 501(c)(3) | 2015 | $23,183 | $185,797 | 2025-07 |
| Mater Dei Council Charities Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2002 | $19,087 | $25,777 | 2025-06 |
| Cross Chinese Baptist Church | 501(c)(3) | 1963 | $17,905 | $13,234 | 2025-12 | |
| Cameroonian Pharmacists Association-Usa | Health care | 501(c)(3) | 2018 | $17,082 | $44,390 | 2025-12 |
| Pta Delaware Congress | 501(c)(3) | 1971 | $16,851 | $31,399 | 2025-06 | |
| Coaltion for Equity and Excellence in Maryland Higher Education Incor | 501(c)(3) | 2021 | $15,153 | $391,919 | 2024-12 | |
| Global Social Science Institute Inc | Housing and shelter | 501(c)(3) | 2014 | $13,543 | $415,452 | 2025-12 |
| American Academy of Medical Sciences Inc | Health care | 501(c)(3) | 2000 | $11,544 | $42,304 | 2025-12 |
| Popayan Corporation | Human services | 501(c)(3) | 2004 | $9,823 | $10,300 | 2025-12 |
| Alameen Masjid Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2023 | $8,854 | $82,472 | 2024-12 |
| Isaiahs Promise Inc | Mental health and crisis intervention | 501(c)(3) | 2014 | $7,746 | $95,926 | 2025-12 |
| Foundation for Facial Recovery Inc | Medical research | 501(c)(3) | 2015 | $7,621 | $78,096 | 2025-12 |
| Knights of Columbus | 501(c)(8) | 1940 | $6,230 | $10,136 | 2025-06 | |
| National Capital Physicians Foundation | Employment | 501(c)(3) | 2016 | $3,686 | $7,208 | 2025-12 |
| Parallel Hope Schools Inc | Education | 501(c)(3) | 2019 | $1,326 | $8,083 | 2026-06 |
| Sander Cohen Scholarship Foundation Inc | Education | 501(c)(3) | 2021 | $1,088 | $1 | 2025-12 |
| Childsavers Inc | 501(c)(3) | 1987 | $1,087 | $45,256 | 2025-12 | |
| Cstar Dance Inc | Arts, culture and humanities | 501(c)(3) | 2023 | $1,065 | $1,529 | 2025-12 |
| Fu Jen Catholic University Greater Washington DC Alumni Association | Education | 501(c)(3) | 2014 | $600 | $3,157 | 2025-12 |
| Disability Inclusion Guild Inc | Community improvement and capacity building | 501(c)(3) | 2015 | $312 | $150 | 2024-12 |
| Janki Ganju Educational Fund Inc | Education | 501(c)(3) | 1996 | $300 | $10,137 | 2025-12 |
| Aids for Women Adolescent and Children International Organizatio | Human services | 501(c)(3) | 2022 | $100 | $0 | 2026-06 |
| American Citizens of Taiwan Origin | Arts, culture and humanities | 501(c)(3) | 2013 | $100 | $729 | 2024-12 |
| Most Valuable Kids Inc | Human services | 501(c)(3) | 2002 | $22 | $46,824 | 2023-12 |
| Singal Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2018 | $13 | $20,481 | 2024-12 |
| 22 Love | Human services | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| 365 A Journey Back To You Care Ministries Inc | Religion-related | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| A Helping Horn Inc | Education | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| A Look of Love Ministries Corp | International, foreign affairs and national security | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Aaron and Cecile Goldman Foundation | 501(c)(3) | 1964 | $4.3 million | 2025-12 | ||
| Abundant Joy Foundation Corp | Human services | 501(c)(3) | 2020 | $0 | $0 | 2024-12 |
| Accomplished Literacy Learners | Education | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Acma Foundation Inc | Crime and legal-related | 501(c)(3) | 2026 | |||
| Actus Financial Research Foundation | Science and technology | 501(c)(3) | 2022 | $239,826 | 2025-12 | |
| Actus Users Association | Science and technology | 501(c)(6) | 2017 | $0 | $0 | 2024-12 |
| Adam Smith Institute Trust | International, foreign affairs and national security | 501(c)(3) | 1996 | $41,994 | 2024-12 | |
| Adolescent Self Injury Foundation Inc | Mental health and crisis intervention | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Advacned Housing & Community Services Corporation of Maryland | Community improvement and capacity building | 501(c)(3) | 2026 | |||
| Advanced Global Education Inc | Education | 501(c)(3) | 2010 | $0 | $0 | 2025-07 |
| Advanced Housing & Community Services Corporation | Housing and shelter | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Adventist Healthcare Washington Adventist Hospital | Health care | 501(c)(3) | 1947 | |||
| African Ambassadors Spouses Association | Human services | 501(c)(3) | 1998 | |||
| African Institute for Investment Studies Afriis Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2023 | $0 | $0 | 2025-07 |
| African Sahara Charity Foundation | Health care | 501(c)(3) | 2026 | |||
| Aidenbridge Foundation Inc | Human services | 501(c)(3) | 2026 | |||
| Aixin Foundation Inc | Diseases, disorders and medical disciplines | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
By cause in Rockville, MD
- Education 136
- Human services 99
- Religion-related 95
- Arts, culture and humanities 93
- Philanthropy, voluntarism and grantmaking foundations 75
- Community improvement and capacity building 59
- Health care 53
- Recreation and sports 41
- Housing and shelter 30
- Medical research 27
- International, foreign affairs and national security 25
- Youth development 22
- Diseases, disorders and medical disciplines 22
- Public and societal benefit 20
- Mental health and crisis intervention 15
- Science and technology 12
- Animal-related 11
- Employment 11
- Civil rights, social action and advocacy 11
- Crime and legal-related 10
- Environment 9
- Public safety, disaster preparedness and relief 8
- Mutual and membership benefit 7
- Food, agriculture and nutrition 5
- Social science 3
Nonprofits in every city of the state
Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.