| Society for Human Resource Management | 501(c)(6) | 1965 | $233 million | $312.5 million | 2024-12 |
| Responsible Business Alliance Inc | 501(c)(6) | 2010 | $37.2 million | $28.2 million | 2025-12 |
| Disability in | 501(c)(3) | 2008 | $18.9 million | $27.2 million | 2025-12 |
| Asco Association | 501(c)(6) | 2019 | $16.6 million | $27.9 million | 2024-12 |
| National Association of Professional Employer Organization | 501(c)(6) | 1988 | $12.2 million | $11.2 million | 2025-12 |
| International Sign Association | 501(c)(6) | 1998 | $9.5 million | $19.6 million | 2024-12 |
| National Oilheat Research Alliance | 501(c)(6) | 2001 | $8.5 million | $21.7 million | 2024-12 |
| Common Ground Alliance | 501(c)(3) | 2001 | $7.5 million | $5.8 million | 2024-12 |
| National Accrediting Commission of Career Arts & Sciences Inc | 501(c)(3) | 1970 | $6.6 million | $11.4 million | 2025-06 |
| Ambulatory Surgery Center Association Inc | 501(c)(6) | 2005 | $6.3 million | $10.5 million | 2024-12 |
| Act for Alexandria | 501(c)(3) | 2009 | $5 million | $21.6 million | 2024-12 |
| Appa-Association of Higher Education Facilities Officers | 501(c)(3) | 1977 | $4.8 million | $3.3 million | 2025-03 |
| BGV Foundation | 501(c)(3) | 2018 | $4.5 million | $5.5 million | 2024-12 |
| Trusted Choice Inc | 501(c)(6) | 2005 | $4 million | $5.2 million | 2025-08 |
| National Association of Free and Charitable Clinics Inc | 501(c)(3) | 2003 | $4 million | $3.6 million | 2024-12 |
| Safe House Project Inc | 501(c)(3) | 2018 | $3.7 million | $3.8 million | 2024-12 |
| Hida Educational Foundation | 501(c)(3) | 1978 | $3.7 million | $3 million | 2024-12 |
| Polymeric Exterior Products Association | 501(c)(6) | 2005 | $3.3 million | $1.5 million | 2024-12 |
| Consumer Action for A Strong Economy Inc | 501(c)(4) | 2017 | $3.3 million | $253,750 | 2024-12 |
| Self Storage Association Foundation | 501(c)(3) | 2007 | $2.8 million | $10.5 million | 2025-12 |
| United Motorcoach Association | 501(c)(6) | 1971 | $2.7 million | $4.5 million | 2024-12 |
| Academy of Clinical Research Professionals | 501(c)(6) | 2006 | $2.4 million | $70,956 | 2024-12 |
| Analytical Life Science & Diagnostics Association | 501(c)(6) | 2003 | $2.4 million | $3.3 million | 2025-06 |
| Ncpa Innovation Center | 501(c)(6) | 2017 | $2.2 million | $815,054 | 2025-06 |
| Mother of Light Center | 501(c)(3) | 2016 | $2 million | $1.5 million | 2026-06 |
| Conexxus | 501(c)(6) | 2004 | $2 million | $391,371 | 2024-12 |
| Center for A Free Economy | 501(c)(4) | 2019 | $1.8 million | $1.3 million | 2024-12 |
| Interoperability Clearinghouse | 501(c)(6) | 2001 | $1.8 million | $2.7 million | 2025-12 |
| American Association for Public Opinion Research | 501(c)(3) | 1964 | $1.7 million | $1.8 million | 2024-12 |
| Council for Affordable and Rural Housing | 501(c)(6) | 1982 | $1.5 million | $500,984 | 2024-12 |
| National Coalition of Black Meeting Planners Inc | 501(c)(3) | 1988 | $1.5 million | $617,061 | 2025-12 |
| American Chamber of Commerce Saudi Arabia | 501(c)(6) | 2021 | $1.4 million | $829,656 | 2025-08 |
| America Connects | 501(c)(4) | 2025 | $1.4 million | $115,976 | 2024-12 |
| American Exceptionalism Institute Inc | 501(c)(4) | 2018 | $1.4 million | $2,247 | 2025-04 |
| State Government Affairs Council | 501(c)(6) | 2000 | $1.3 million | $1.1 million | 2024-12 |
| Fair Lines America Inc | 501(c)(4) | 2010 | $1.3 million | $569,044 | 2024-12 |
| Responsible Business Alliance Foundation | 501(c)(3) | 2015 | $1.2 million | $1.8 million | 2024-12 |
| Physician Assistants in Orthopaedic Surgery | 501(c)(6) | 2006 | $1.2 million | $1.1 million | 2025-06 |
| Omniair Consortium Inc | 501(c)(6) | 2007 | $1.1 million | $379,269 | 2024-12 |
| Physician Assistant Foundation of the American Academy of Physician | 501(c)(3) | 1978 | $1.1 million | $5 million | 2025-12 |
| Aeronautical Repair Station Association Inc | 501(c)(6) | 2007 | $1.1 million | $81,583 | 2025-12 |
| Health Care Alliance for Patient Safety Inc | 501(c)(6) | 2019 | $1.1 million | $1.6 million | 2024-12 |
| Air Conditioning Contractors of America | 501(c)(3) | 1981 | $1 million | $24.4 million | 2025-07 |
| The Commercial Vehicle Training Association | 501(c)(6) | 2014 | $1 million | $463,787 | 2024-12 |
| Ctam Educational Foundation | 501(c)(3) | 1997 | $975,400 | $1.6 million | 2025-12 |
| Windstorm Insurance Network Inc | 501(c)(3) | 2001 | $904,002 | $618,137 | 2026-06 |
| Disaster Recovery Contractorsassociation | 501(c)(6) | 2018 | $900,931 | $692,281 | 2025-03 |
| Fraternal Order of Eagles | 501(c)(8) | 1991 | $900,650 | $1.8 million | 2025-05 |
| American Catalog Mailersassociation Inc | 501(c)(6) | 2008 | $791,179 | $1.2 million | 2025-12 |
| Nahma Educational Foundation | 501(c)(3) | 1996 | $736,387 | $3.2 million | 2025-12 |
| Workforce Fairness Institute | 501(c)(6) | 2010 | $708,000 | $181,803 | 2025-06 |
| Commuter Rail Coalition | 501(c)(6) | 2020 | $622,578 | $965,263 | 2023-03 |
| Seed Association of the Americas | 501(c)(6) | 2005 | $583,806 | $763,771 | 2025-12 |
| Air Medical Operators Association | 501(c)(6) | 2010 | $565,600 | $832,390 | 2025-12 |
| International Association of Applied Psychology | 501(c)(6) | 2018 | $402,471 | $2.3 million | 2024-12 |
| Del Ray Business Association Inc | 501(c)(6) | 2015 | $382,756 | $236,417 | 2025-12 |
| American College of Coverage Counsel Inc | 501(c)(6) | 2014 | $366,996 | $1.1 million | 2025-12 |
| American College of Environmentallawyers Incorporated | 501(c)(6) | 2009 | $284,980 | $297,525 | 2025-12 |
| Federal It Security Institute | 501(c)(6) | 2014 | $280,611 | $71,132 | 2025-06 |
| Foundation for A Sustainable Community Inc | 501(c)(3) | 2004 | $246,477 | $1,242 | 2024-12 |
| Appa Board for Educationalfacilities Professionals Certificat | 501(c)(6) | 2009 | $240,130 | $289,430 | 2025-03 |
| Virginia Physical Therapy Association Inc School of Physical | 501(c)(6) | 1958 | $237,874 | $457,466 | 2025-06 |
| Florida Self-Storage Association Inc | 501(c)(6) | 2001 | $224,459 | $1.3 million | 2025-12 |
| Association of Public Data Users | 501(c)(3) | 2007 | $210,499 | $79,579 | 2024-12 |
| Southeast Fairfax Development Corporation | 501(c)(3) | 1983 | $194,577 | $149,712 | 2025-06 |
| National Assoc of Elementary School Principals Foundation | 501(c)(3) | 2019 | $173,046 | $795,777 | 2025-06 |
| Lead Battery 360 Assurance Foundation | 501(c)(6) | 2025 | $165,588 | $198,089 | 2025-12 |
| Rotary International | 501(c)(4) | 1966 | $132,874 | $76,278 | 2025-06 |
| Fuel Foundation | 501(c)(3) | 2014 | $131,415 | $174,117 | 2025-09 |
| New Jersey Self Storage Association Inc | 501(c)(6) | 2002 | $129,430 | $265,386 | 2025-12 |
| Mindshare Inc | 501(c)(6) | 2009 | $125,402 | $158,224 | 2024-12 |
| Neurosurgical Society of the Virginias | 501(c)(6) | 2009 | $122,971 | $138,248 | 2024-12 |
| American Society of Travel Agents Inc | 501(c)(6) | 2026 | $105,342 | $113,015 | 2024-12 |
| International Board for Certification in Facial Plastic An | 501(c)(6) | 2017 | $102,975 | $161,365 | 2025-12 |
| Alexandria Stylebook Inc | 501(c)(6) | 2023 | $100,752 | $59,869 | 2025-12 |
| Society for Marketing Professional Services Foundation | 501(c)(3) | 2017 | $99,222 | $378,887 | 2025-08 |
| Academy of Aquatic Physical Therapy | 501(c)(6) | 1999 | $91,584 | $61,736 | 2025-12 |
| Floral Marketing Research Fund | 501(c)(6) | 2013 | $87,694 | $266,826 | 2025-06 |
| Volumetric Mixer Manufacturers Bureau | 501(c)(6) | 2001 | $82,410 | $98,977 | 2024-12 |
| National Federal Development Association Inc | 501(c)(6) | 2012 | $57,367 | $208,852 | 2025-12 |
| Illinois Mini Storage Association | 501(c)(6) | 2005 | $56,140 | $189,447 | 2025-12 |
| Credit Abuse Resistance Education | 501(c)(3) | 2016 | $48,327 | $205,805 | 2024-12 |
| Ethiopian Community Support and Advocacy Center | 501(c)(3) | 2022 | $44,586 | $28,525 | 2025-12 |
| Acc Members Foundation | 501(c)(3) | 2014 | $42,593 | $277,933 | 2024-12 |
| Uspto Apanet | 501(c)(4) | 2024 | $20,053 | $45,529 | 2025-12 |
| Co Partners of Campesinas | 501(c)(3) | 1998 | $16,669 | $39,809 | 2025-12 |
| The Us Colombia Business Partnership | 501(c)(6) | 1998 | $14,495 | $177,004 | 2024-12 |
| Alexandria Small Business Development Center | 501(c)(3) | 1999 | $13,317 | $565,550 | 2025-06 |
| Agenda Alexandria | 501(c)(3) | 1999 | $0 | $0 | 2026-06 |
| Alexandria Asian American Lions Club Inc | 501(c)(4) | 2016 | $0 | $0 | 2025-06 |
| Alexandria Collaborative Dental Con Nection | 501(c)(6) | 2025 | | | |
| Alexandria Minority Business Association | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Alexandria South Rotary | 501(c)(4) | 1958 | $0 | $0 | 2025-06 |
| American Academy of Nephrology Physician Assistants Aanpa | 501(c)(6) | 2008 | $0 | $0 | 2025-05 |
| American Society of Professional Estimators Chapter 23 | 501(c)(6) | 2010 | $0 | $0 | 2024-07 |
| American Society of Travel Advisors Inc Asta North Florida Chapter | 501(c)(6) | 2026 | $0 | $0 | 2025-12 |
| American Society of Travel Advisors Inc Asta Ohio Chapter | 501(c)(6) | 2026 | $0 | $0 | 2025-12 |
| American Society of Travel Advisors Inc-Asta Greater Raleigh Chapte | 501(c)(6) | 2026 | $0 | $0 | 2025-12 |
| American Society of Travel Advisors New York City SBN Chapter | 501(c)(6) | 2026 | $0 | $0 | 2025-12 |
| American Society of Travel Agents Inc | 501(c)(6) | 2026 | $0 | $0 | 2025-12 |
| Ander Equitable Housing Corporation | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Army Geospatial Center Recreation Association | 501(c)(4) | 2011 | $0 | $0 | 2025-09 |
| Association of Wedding Professionals of Greater Washingto | 501(c)(6) | 2015 | $0 | $0 | 2025-12 |
| Baileys Crossroads Revitalization Corporation | 501(c)(3) | 1996 | $0 | $0 | 2024-12 |
| Belle Haven Citizens Association | 501(c)(4) | 2012 | $0 | $0 | 2025-12 |
| Belle Haven Terrace Civic Association | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Black Alumni Together Inc | 501(c)(3) | 2025 | | | |
| Blue Strike | 501(c)(3) | 2015 | $0 | $0 | 2025-01 |
| Center for Community Conservation | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Center for Cross-Sector Coordinatio N | 501(c)(6) | 2026 | | | |
| Cyber Guild Inc | 501(c)(6) | 2022 | $0 | $0 | 2025-12 |
| Edvillage Group Inc | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Election Technology Education Fund | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Flower Promotion Organization Inc | 501(c)(6) | 2001 | $0 | $0 | 2023-12 |
| Forward-Faster Inc | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Friends of Hollin Hills | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Great Opportunity Promise Foundatio N | 501(c)(3) | 2026 | | | |
| Haile Selassie International Development Foundation Inc | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Harambee Community Economic Developement Corporation | 501(c)(3) | 2016 | $0 | $0 | 2024-12 |
| Health Development and Anti Malaria Association | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Healthcare Alliance | 501(c)(6) | 2025 | $0 | $0 | 2024-12 |
| Hope for the Future | 501(c)(3) | 1997 | $0 | $0 | 2023-12 |
| Judge Advocate Association | 501(c)(6) | 2023 | $0 | $0 | 2025-12 |
| Launchpad Africa Inc | 501(c)(3) | 2021 | $0 | $0 | 2025-07 |
| Licensing Compact Administration Services Corporation | 501(c)(6) | 2018 | $0 | $0 | 2024-12 |
| Machinery Dealers National Association | 501(c)(6) | 2002 | $0 | $0 | 2026-03 |
| Machinery Dealers National Association | 501(c)(6) | 2002 | $0 | $0 | 2025-12 |
| Machinery Dealers National Association | 501(c)(6) | 2002 | $0 | $0 | 2025-12 |
| Machinery Dealers National Association | 501(c)(6) | 2002 | $0 | $0 | 2025-12 |
| Machinery Dealers National Association | 501(c)(6) | 2002 | $0 | $0 | 2025-12 |
| Machinery Dealers National Association | 501(c)(6) | 2002 | $0 | $0 | 2025-12 |
| Machinery Dealers National Association | 501(c)(6) | 2002 | $0 | $0 | 2025-12 |
| Machinery Dealers National Association | 501(c)(6) | 2002 | $0 | $0 | 2025-12 |
| Machinery Dealers National Association | 501(c)(6) | 2002 | $0 | $0 | 2025-12 |
| Machinery Dealers National Association | 501(c)(6) | 2002 | $0 | $0 | 2025-12 |
| Mariposa Hope Alliance | 501(c)(3) | 2026 | | | |
| Maryland Self Storage Association Inc | 501(c)(6) | 2001 | $0 | $0 | 2025-12 |
| Medhin Association | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Mid Atlantic Chapter | 501(c)(6) | 2025 | $0 | $0 | 2026-03 |
| My Family Forever | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| National Association for the Advancement of Animal Science | 501(c)(6) | 2013 | $0 | $1,528 | 2025-12 |
| National Association of Agriculture and Food Policy | 501(c)(6) | 2012 | $0 | $152,933 | 2025-12 |
| National Association of Certified Professional Midwives Inc | 501(c)(6) | 2017 | $0 | $0 | 2025-12 |
| New Alexandria Citizens Association | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Nonprofit Reporter Inc | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| North Old Town Independent Citizens Association | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Northern Virginia Estate Planning Council | 501(c)(3) | 2015 | $0 | $0 | 2024-10 |
| Old Town Civic Association Inc | 501(c)(4) | 2008 | $0 | $0 | 2026-06 |
| Parklawn Civic Association | 501(c)(4) | 2014 | $0 | $0 | 2024-12 |
| Penelopes Child | 501(c)(3) | 2025 | | | |
| Potomac Valley-Riverbend Civic Association Inc | 501(c)(4) | 2012 | $0 | $0 | 2023-12 |
| Preamblist Movement Inc | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Public Health Service Academy of Physician Assistants Phsapa | 501(c)(6) | 2016 | $0 | $0 | 2025-09 |
| Rotary Club of Alexandria Central Inc | 501(c)(4) | 2022 | $0 | $0 | 2025-06 |
| Rotary International | 501(c)(4) | 1966 | $0 | $0 | 2026-06 |
| Royal Women Transformation and Empowerment Foundation | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Save A Daughter Foundation | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Spark Economic Empowerment | 501(c)(3) | 2024 | $0 | $0 | 2025-09 |
| Startup Caucus Chamber of Commerce | 501(c)(6) | 2023 | $0 | $0 | 2024-12 |
| Tamegue Global Initiative Foundatio N | 501(c)(3) | 2026 | | | |
| Taste Takeover | 501(c)(3) | 2025 | $0 | $0 | 2024-12 |
| Testimony at Triumphant Community International | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Vermont Self Storage Association Inc | 501(c)(6) | 1999 | $0 | $0 | 2025-12 |
| Virginia Hills Citizens Association Inc | 501(c)(4) | 2002 | $0 | $0 | 2025-08 |
| Virginia Self-Storage Association | 501(c)(6) | 2001 | $0 | $164,351 | 2025-12 |
| West Old Town Citizens Association | 501(c)(3) | 2004 | $0 | $0 | 2025-12 |