Data / Nonprofits / Illinois / Oak Brook
Nonprofits in Oak Brook, IL: 271 registered with the IRS
271 nonprofits are registered with the IRS in Oak Brook, IL, 206 of them 501(c)(3) charities; the 139 that report revenue took in $2.26 billion. The largest by revenue: Unite Here Health ($1.51 billion), National Insurance Crime Bureau ($73.3 million), Advocate Aurora Health Inc ($71.5 million). Most common causes: philanthropy, voluntarism and grantmaking foundations (39), religion-related (19), education (19).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Unite Here Health | 501(c)(9) | 1974 | $1.51 billion | $1.38 billion | 2025-03 | |
| National Insurance Crime Bureau | 501(c)(4) | 1994 | $73.3 million | $94.7 million | 2025-12 | |
| Advocate Aurora Health Inc | Health care | 501(c)(3) | 2018 | $71.5 million | $2.18 billion | 2024-12 |
| Lions Clubs International FTDN | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1969 | $71.3 million | $448.5 million | 2025-06 |
| Radiological Society of North America Inc | Diseases, disorders and medical disciplines | 501(c)(3) | 1943 | $68.5 million | $218.3 million | 2025-06 |
| Roofers Union Welfare Trust Fund | 501(c)(9) | 1952 | $39.3 million | $118.1 million | 2025-12 | |
| Ufcw Local 546 Food Handlers Welfare Fund | 501(c)(9) | 1958 | $31.9 million | $44.4 million | 2025-12 | |
| Welfare Fund Trust of Architectural Ironworkers Local No 63 | 501(c)(9) | 1984 | $27.1 million | $94.4 million | 2025-05 | |
| Plumbing & Pipefitting Industry Health & Welfare Fund of Kansas-17 | 501(c)(9) | 1967 | $24.4 million | $27.6 million | 2025-07 | |
| Ibew Local Union No 212 Health & Welfare Fund | 501(c)(9) | 1969 | $24.3 million | $40.1 million | 2025-04 | |
| Iron Workers-8 Welfare Fund | 501(c)(9) | 1958 | $23 million | $52.9 million | 2025-05 | |
| Chicago Graphic Arts Health and Welfare Fund | 501(c)(9) | 1959 | $22.7 million | $36.3 million | 2024-12 | |
| Iron Workers Local 395 Trust Fund | 501(c)(9) | 1978 | $22.3 million | $63.2 million | 2024-12 | |
| Advocate Health Care Network | Health care | 501(c)(3) | 1988 | $21.8 million | $625.8 million | 2024-12 |
| Butterfield Country Club | 501(c)(7) | 1937 | $17 million | $38.5 million | 2025-04 | |
| Midwest Coalition of Labor | Employment | 501(c)(5) | 2019 | $15 million | $5.3 million | 2024-12 |
| Stagehands Union Local No 2 Health and Welfare Fund | 501(c)(9) | 1975 | $13 million | $20.6 million | 2024-12 | |
| Glazing Employers & Glaziers Union Local 27 Health & Welfare Fund | 501(c)(9) | 1959 | $12.4 million | $29.3 million | 2025-05 | |
| Plumbers & Pipefitters-172 Welfare Fund | 501(c)(9) | 1961 | $12.3 million | $22.2 million | 2025-02 | |
| Iron Workers Midwest Region Health & Welfare Trust | 501(c)(9) | 1956 | $10.4 million | $18.2 million | 2025-06 | |
| Society for Laboratory Automation and Screening | Science and technology | 501(c)(3) | 2011 | $9.8 million | $15.5 million | 2025-12 |
| United Union of Roofers Waterproofers and Allied Workers | 501(c)(5) | 1944 | $8.4 million | $14.1 million | 2025-12 | |
| Board of Certification for Emergency Nursing | 501(c)(6) | 1988 | $8.3 million | $17.3 million | 2024-12 | |
| New Directions Housing Corporation | Housing and shelter | 501(c)(3) | 1995 | $7.5 million | $21.2 million | 2024-12 |
| Butler National Golf Club | 501(c)(7) | 1975 | $7 million | $27.9 million | 2025-10 | |
| American Society of Neuroradiology | 501(c)(6) | 1971 | $5.5 million | $17.9 million | 2025-12 | |
| Colorado Finishing Trades Health and Welfare Fund | 501(c)(9) | 1997 | $5.2 million | $7.8 million | 2025-06 | |
| Pediatric Orthopaedic Society of North America | Diseases, disorders and medical disciplines | 501(c)(3) | 1991 | $4.8 million | $19.8 million | 2025-12 |
| Foundation of the American Society of Neuroradiology | Medical research | 501(c)(3) | 2019 | $4.7 million | $14 million | 2024-12 |
| Zonta International Foundation | International, foreign affairs and national security | 501(c)(3) | 1986 | $4.5 million | $22.6 million | 2025-05 |
| Unitehere Legal Plan | 501(c)(9) | 1994 | $4 million | $6.6 million | 2025-03 | |
| Franciscan Tertiary Province of the Sacred Heart Inc | 501(c)(3) | 1946 | $3.6 million | $6.1 million | 2025-06 | |
| Machinery Movers Riggers & Erectors 136 Health & Welfare Trust Fund | 501(c)(9) | 1983 | $3.4 million | $5.3 million | 2025-06 | |
| Muhsen | Human services | 501(c)(3) | 2015 | $3.3 million | $5.3 million | 2024-12 |
| Du Page Convention & Visitors Bureau Inc | 501(c)(6) | 1990 | $3.2 million | $1.4 million | 2025-06 | |
| The American Laryngological Rhinological and Otological | Diseases, disorders and medical disciplines | 501(c)(3) | 1992 | $3 million | $25.5 million | 2025-07 |
| Illinois Landscape Contractors Association | 501(c)(6) | 1972 | $2.9 million | $5 million | 2025-12 | |
| Shared Vision Inc | Mental health and crisis intervention | 501(c)(3) | 2014 | $2.7 million | $2.7 million | 2024-12 |
| Science Olympiad | Science and technology | 501(c)(3) | 1985 | $2.7 million | $10.3 million | 2025-09 |
| The Human Development Foundation of North America | International, foreign affairs and national security | 501(c)(3) | 1998 | $2.4 million | $5.8 million | 2024-12 |
| Greencastle of Mulford Inc | Human services | 501(c)(3) | 1980 | $2.3 million | $2.2 million | 2024-12 |
| Texas Iron Workers Training Trust | Education | 501(c)(3) | 2017 | $2.2 million | $5.2 million | 2025-06 |
| Embrace Living Communities | Community improvement and capacity building | 501(c)(3) | 1988 | $2.1 million | $2.7 million | 2024-12 |
| Smacna Greater Chicago | Community improvement and capacity building | 501(c)(6) | 2015 | $2 million | $2 million | 2025-06 |
| American Society of Home Inspectors | 501(c)(6) | 1978 | $1.8 million | $2.1 million | 2025-06 | |
| Ibew Local Union 212 Supplemental Unemployment Benefit Plan | 501(c)(9) | 1973 | $1.8 million | $13.8 million | 2025-04 | |
| Greencastle of Barrington Inc | Housing and shelter | 501(c)(3) | 1964 | $1.7 million | $2.1 million | 2025-12 |
| Metropolitan Chicagoland Sheet Metal Industry Fund | 501(c)(6) | 1974 | $1.6 million | $130,730 | 2025-06 | |
| Liberty Commons NFP | Human services | 501(c)(2) | 2019 | $1.6 million | $7 million | 2025-03 |
| Glenview Elderly Housing | Housing and shelter | 501(c)(3) | 1964 | $1.5 million | $2 million | 2024-12 |
| American Association of Physicians of India Orgin | Health care | 501(c)(3) | 1984 | $1.5 million | $5.8 million | 2025-06 |
| Odyssey Charities | Recreation and sports | 501(c)(3) | 2015 | $1.4 million | $18.2 million | 2024-12 |
| Casl Housing Corporation | Housing and shelter | 501(c)(3) | 1995 | $1.4 million | $3 million | 2025-06 |
| Kenwood Area Housing Inc | 501(c)(3) | 1990 | $1.2 million | $1.2 million | 2025-12 | |
| Dupage Mayors & Managers Conference Inc | Public and societal benefit | 501(c)(3) | 1980 | $1.2 million | $4.2 million | 2025-04 |
| Greencastle of Palatine Inc | 501(c)(3) | 1964 | $1.1 million | $2.7 million | 2025-12 | |
| Bayonet Point Area Housing Inc | 501(c)(3) | 1990 | $1.1 million | $1.7 million | 2025-12 | |
| National Association of Letter Carriers | 501(c)(5) | 1944 | $1 million | $746,567 | 2024-12 | |
| Greencastle of North Aurora Inc | Housing and shelter | 501(c)(3) | 2002 | $976,025 | $5.9 million | 2025-12 |
| American Society of Head and Neck Radiology Inc | Health care | 501(c)(3) | 2022 | $855,290 | $4.8 million | 2025-12 |
| Recovery International | Mental health and crisis intervention | 501(c)(3) | 1942 | $841,961 | $4.9 million | 2024-12 |
| Apostles Village Inc | Housing and shelter | 501(c)(3) | 2007 | $817,691 | $3.3 million | 2025-12 |
| Plumbing Council of Chicagoland | 501(c)(6) | 1969 | $792,911 | $2.3 million | 2025-12 | |
| Plumbing Contractors Association of Chicago and Cook County | 501(c)(6) | 1970 | $757,897 | $561,053 | 2025-12 | |
| Hand in Hand USA | Education | 501(c)(3) | 2002 | $750,889 | $834,455 | 2025-12 |
| Greencastle of Bienterra Inc | Housing and shelter | 501(c)(3) | 1997 | $732,893 | $1.8 million | 2025-12 |
| Natya Dance Theatre | Arts, culture and humanities | 501(c)(3) | 1996 | $727,844 | $1.4 million | 2025-12 |
| Greencastle of Loves Park Inc | Housing and shelter | 501(c)(3) | 2000 | $680,790 | $2 million | 2025-12 |
| Lizzadro Museum of Lapidary Arts | Arts, culture and humanities | 501(c)(3) | 1964 | $662,425 | $4.8 million | 2025-12 |
| Sarasota Area Housing Inc | 501(c)(3) | 1993 | $603,712 | $1.1 million | 2025-12 | |
| Bethel Area Housing South | Housing and shelter | 501(c)(3) | 1995 | $593,307 | $895,451 | 2024-12 |
| Nicb Foundation | Employment | 501(c)(3) | 2001 | $588,609 | $692,149 | 2025-12 |
| Morgan Park and Beverly Handicapped | Arts, culture and humanities | 501(c)(3) | 1987 | $586,671 | $533,291 | 2025-12 |
| American Society of Spine Radiology | Medical research | 501(c)(3) | 2000 | $564,890 | $1.3 million | 2025-12 |
| Adventures With MR Math | Education | 501(c)(3) | 2016 | $538,880 | $343,726 | 2024-12 |
| Greencastle of Sterling Inc | Housing and shelter | 501(c)(3) | 1998 | $491,541 | $1.4 million | 2025-12 |
| Institute of Real Estate Management of the Natl Association of Realtors | Community improvement and capacity building | 501(c)(6) | 1976 | $477,248 | $649,421 | 2025-12 |
| Breath of Life Professional Services NFP | Religion-related | 501(c)(3) | 2007 | $475,299 | $1.3 million | 2025-12 |
| International Automotive Lithium Battery - Inc | Community improvement and capacity building | 501(c)(6) | 2014 | $471,422 | $404,327 | 2025-12 |
| Bethel Area Housing Inc | 501(c)(3) | 1990 | $461,925 | $364,249 | 2024-12 | |
| Brother Rice High School Foundation Inc | Education | 501(c)(3) | 2013 | $456,911 | $1.8 million | 2025-06 |
| American Society of Functional Neuroradiology | Community improvement and capacity building | 501(c)(6) | 2005 | $419,425 | $538,248 | 2025-12 |
| Embrace Living Charities | Human services | 501(c)(3) | 1941 | $404,569 | $6.2 million | 2025-12 |
| Infection Prevention and Conrol Foundation | Health care | 501(c)(3) | 2018 | $403,380 | $8,765 | 2024-12 |
| Eastern Neuroradiological Society Inc | 501(c)(6) | 1992 | $384,431 | $298,717 | 2025-12 | |
| Shri Patan Jain Mandal of USA NFP | Health care | 501(c)(3) | 2023 | $316,706 | $158,473 | 2025-12 |
| Butterfield Country Club Scholarship Program | Education | 501(c)(3) | 2017 | $304,702 | $1.2 million | 2025-12 |
| Society of University Otolarnyngologists | 501(c)(4) | 1972 | $299,279 | $332,463 | 2024-12 | |
| Greencastle of Allerton Inc | Housing and shelter | 501(c)(3) | 2010 | $282,429 | $2 million | 2025-12 |
| Womens Treatment Center | Human services | 501(c)(3) | 1990 | $278,314 | $2.2 million | 2024-06 |
| Zonta International | 501(c)(4) | 1953 | $270,377 | $588,862 | 2018-05 | |
| Promotional Professionals Association of Chicago-Wisconsin Inc | 501(c)(6) | 1989 | $268,105 | $401,388 | 2025-12 | |
| Ewha Womans University Alumnae Association of North America Inc | Education | 501(c)(3) | 2002 | $267,075 | $351,868 | 2024-12 |
| Western Neuroradiological Society Inc | 501(c)(6) | 1969 | $258,112 | $166,620 | 2025-12 | |
| Butler District 53 Parent Teacher Organization | Education | 501(c)(3) | 2008 | $258,080 | $155,747 | 2025-07 |
| Ampi | Health care | 501(c)(3) | 2009 | $257,345 | $667,694 | 2025-04 |
| Ihe International Inc | Health care | 501(c)(3) | 2016 | $227,320 | $263,674 | 2025-06 |
| Association of Sikh Professionals | Religion-related | 501(c)(3) | 1987 | $225,084 | $2.1 million | 2025-12 |
| Butler National Scholarship Fund Inc | Education | 501(c)(3) | 2014 | $219,870 | $957,477 | 2025-12 |
| Spirito | Arts, culture and humanities | 501(c)(3) | 2008 | $214,726 | $65,207 | 2025-06 |
| Heart of Portillos Foundation Inc | Human services | 501(c)(3) | 2020 | $214,269 | $888,591 | 2024-12 |
| Chicago Roofers and Waterproofers Charitable Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2015 | $189,453 | $72,839 | 2025-12 |
| Illinois Chapter-American Society of Landscape Architects | Environment | 501(c)(6) | 2014 | $173,254 | $52,170 | 2025-12 |
| Italian American Executives of Transportation | 501(c)(3) | 1980 | $164,359 | $31,196 | 2023-12 | |
| Luth-Cmul Muslim Alumni Association | Education | 501(c)(3) | 2005 | $153,139 | $13,866 | 2025-08 |
| Far Eastern Univ Dr Nicanor Reyes School of Medicine Alumni Fndation | International, foreign affairs and national security | 501(c)(3) | 1972 | $126,365 | $1.9 million | 2025-12 |
| Worldhope Us Inc | International, foreign affairs and national security | 501(c)(3) | 2010 | $115,604 | $27,958 | 2026-01 |
| 7 X 24 Exchange International Lake Michigan Region Chapter Inc | Community improvement and capacity building | 501(c)(6) | 2023 | $107,369 | $68,504 | 2024-12 |
| My Christian TV Eden Inc | Religion-related | 501(c)(3) | 2011 | $104,809 | $458,609 | 2024-12 |
| Illinois Endoscopy Society NFP | Arts, culture and humanities | 501(c)(4) | 2023 | $103,725 | $175,953 | 2025-12 |
| Southeastern Neuroradiological Society Inc | Diseases, disorders and medical disciplines | 501(c)(3) | 1983 | $103,376 | $126,494 | 2025-12 |
| Rahmat Medical Center | Recreation and sports | 501(c)(3) | 2024 | $100,000 | $100,000 | 2024-12 |
| Interurban Neurosurgical Society | Education | 501(c)(3) | 2010 | $98,874 | $91,826 | 2025-12 |
| Malankara Orthodox Christian Society of Chicago | Human services | 501(c)(3) | 2024 | $95,091 | $34,684 | 2025-12 |
| Chinese Christian Education Foundation | Religion-related | 501(c)(3) | 2010 | $86,545 | $258,360 | 2025-12 |
| American Lebanese Joint Civic Association Inc NFP | Arts, culture and humanities | 501(c)(3) | 2019 | $81,059 | $168,453 | 2025-12 |
| Oak Brook Park District Foundation | Recreation and sports | 501(c)(3) | 2014 | $80,600 | $75,099 | 2025-04 |
| Lucca Charities | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2024 | $76,668 | $103,254 | 2024-12 |
| Flow Foundation Inc | Crime and legal-related | 501(c)(3) | 2020 | $75,000 | $1 | 2024-12 |
| Syrian American Medical Society- Midwest Foundation | Health care | 501(c)(3) | 2007 | $68,282 | $60,920 | 2024-12 |
| Musicians Enduring Legacy Organization NFP | Arts, culture and humanities | 501(c)(3) | 2024 | $64,670 | $64,667 | 2024-12 |
| Strategic Christian Ministry Foundation | 501(c)(3) | 1974 | $61,275 | $36,042 | 2025-12 | |
| Nourishment Projects NFP | Education | 501(c)(3) | 2023 | $58,437 | $40,725 | 2025-12 |
| Du Page Association of Women Lawyers | Community improvement and capacity building | 501(c)(6) | 2019 | $57,656 | $41,844 | 2025-05 |
| Midwest Furniture Club | Community improvement and capacity building | 501(c)(6) | 2009 | $47,622 | $27,143 | 2025-12 |
| XPX Chicago Inc | Community improvement and capacity building | 501(c)(6) | 2017 | $45,569 | $74,590 | 2025-09 |
| Golden Life Foundation | Human services | 501(c)(3) | 2019 | $39,741 | $0 | 2025-07 |
| Embrace Living Development | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1995 | $33,933 | $1.3 million | 2025-12 |
| Athletico Cares Foundation Inc | Health care | 501(c)(3) | 2022 | $31,368 | $515,000 | 2025-12 |
| Chicago Club of the Deaf | 501(c)(3) | 1993 | $26,939 | $441,903 | 2025-12 | |
| Friends of the Oak Brook Public Library | 501(c)(3) | 1963 | $25,741 | $240,685 | 2026-05 | |
| Atassi Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2016 | $20,181 | $26,841 | 2024-12 |
| Imlb Limited Liaility Company LLC | Community improvement and capacity building | 501(c)(6) | 2014 | $19,517 | $551,437 | 2025-12 |
| Memorial Drive Community Inc | Housing and shelter | 501(c)(3) | 2012 | $14,041 | $207,000 | 2024-12 |
| Drill Doc | Recreation and sports | 501(c)(7) | 2026 | $10,774 | $1,824 | 2024-12 |
| Wilfried Wilke Scholarship Trust Fund A Charitable Trust | Education | 501(c)(3) | 2020 | $6,781 | $61,585 | 2024-12 |
| Illinois Registry of Interpreters for the Deaf | Human services | 501(c)(3) | 2025 | $5,038 | $38,606 | 2024-06 |
| Ipurpose Ministry | Religion-related | 501(c)(3) | 2016 | $22 | $48,796 | 2024-12 |
| Aapi Global Foundation | Health care | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Aba Highland Medical Center | 501(c)(3) | 1984 | $215,595 | 2024-12 | ||
| Abercrombie & Kent Wildlife Foundation | 501(c)(3) | 1977 | ||||
| Ace Hardware Foundation | 501(c)(3) | 1992 | $10.3 million | 2024-12 | ||
| Adriana & Joseph Van Eekeren Charitable Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2024 | $176,093 | 2025-12 | |
| Agha Family Charitable Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2025 | $7,000 | 2025-12 | |
| Aigas Foundation Inc | Environment | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Aigas University | Human services | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Andrew C Langert Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2022 | $684,863 | 2025-12 | |
| Anil Neerukonda Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2003 | $5,221 | 2024-12 | |
| Arena Therapy and Justice Center | Mental health and crisis intervention | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Arthur G Jaros Sr and Dawn L Jaros Charitable Trust | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2005 | $4.7 million | 2024-12 | |
| Ashi Foundation | Education | 501(c)(3) | 2010 | $0 | $0 | 2025-06 |
| Association of Academic Departments of Otolaryngology | 501(c)(3) | 1977 | $0 | $0 | 2025-12 | |
| BMF Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2008 | $234,748 | 2025-12 | |
| Barnes Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2009 | $2 million | 2024-12 | |
| Bear Manor Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2021 | $990,876 | 2025-12 | |
| Beeee NFP | Human services | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Bracco Italiano Health Foundation | Animal-related | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| CNH Industrial Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2017 | $111,508 | 2024-12 | |
| Caleel Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2019 | $1.5 million | 2025-12 | |
| Capraro Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2011 | $4 million | 2025-06 | |
| Castle Foundation Inc | 501(c)(3) | 1956 | $2,293 | 2025-12 | ||
| Catholic Sports Camps | Religion-related | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Charity Circle 93 | Food, agriculture and nutrition | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Chetna Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2023 | $154,920 | 2025-12 | |
| Chicago Chapter of the Organization of Pakistani Entrepre | Education | 501(c)(3) | 2019 | $26,163 | 2025-12 | |
| Chicagoveg | Food, agriculture and nutrition | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Chinese Cultural Garden Association | Arts, culture and humanities | 501(c)(3) | 2001 | $0 | $0 | 2026-06 |
| Christ Church of Oak Brook | 501(c)(3) | 1968 | 1996-12 | |||
| Church of South India Congregation Chicago | Religion-related | 501(c)(3) | 2025 | |||
| Daniel and Carol Goodwin Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2017 | $143,236 | 2025-12 | |
| Dawn Center | Animal-related | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Donald P and Byrd M Kelly Foundation | 501(c)(3) | 1987 | $7.2 million | 2025-06 | ||
| Dr Vedavathi & Lakshman Agadi Foundation NFP | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2015 | $1.8 million | 2025-12 | |
| Dupage County Historical Society | 501(c)(3) | 1957 | $0 | $0 | 2025-09 | |
| Dupage Sports Commission | Recreation and sports | 501(c)(3) | 2023 | $0 | $158,085 | 2024-12 |
| Eagle Cove Camp and Conference Center Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2005 | $457,108 | 2024-12 | |
| Eloisa Blanco International Foundation Inc | Human services | 501(c)(3) | 2018 | $0 | $13,476 | 2024-12 |
| Ernest C and Marion R Karras Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2010 | $1.4 million | 2025-12 | |
| Esther Grace Foundation | Religion-related | 501(c)(3) | 2024 | |||
| Fatima Memorial Hospital Foundation | International, foreign affairs and national security | 501(c)(3) | 2015 | $0 | $0 | 2024-12 |
| Fbi Chicago Citizens Acaedemy Alumni Association | Crime and legal-related | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Flynn Foundation Inc | 501(c)(3) | 1990 | $29,504 | 2025-12 | ||
| Four Minute Bible Ministry Inc | Religion-related | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Frieden Foundation | Human services | 501(c)(3) | 2024 | $0 | $0 | 2025-05 |
| Fujian Gongyu Business Association of USA Inc | Education | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Fundacion Nueva Oportunidad Inc | Civil rights, social action and advocacy | 501(c)(3) | 2024 | $0 | $0 | 2023-12 |
| Gandhi Charitable Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2022 | $2.9 million | 2025-06 | |
| Gerald J Kostelny and Carolyn Ckostelny Charitable Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2007 | $536,418 | 2024-12 | |
| Gratiot Lake Conservancy | Environment | 501(c)(3) | 1998 | $13.1 million | 2025-12 | |
| Green Pastures Ministries | Religion-related | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Haque Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2001 | $1.1 million | 2025-12 | |
| Help the World Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2002 | $58,968 | 2025-12 | |
| Heniff Cares LTD NFP | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2018 | $77,905 | 2025-12 | |
| Huizenga Foundation | 501(c)(3) | 1989 | $120 | 2025-12 | ||
| Human Resource Association of Greater Oak Brook | 501(c)(6) | 1970 | $0 | $0 | 2025-12 | |
| Ians Place for Bereaved Parents | Mental health and crisis intervention | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Illinois Childrens Healthcare Foundation | Human services | 501(c)(3) | 2003 | $151 million | 2024-12 | |
| Illinois Landscape Contractors Educational & Charitable Org | Education | 501(c)(3) | 2001 | $1 million | 2025-12 | |
| Illinois Philippine Medical Society Calamity Relief Endowment | Public and societal benefit | 501(c)(3) | 2024 | |||
| Indima Foundation | 501(c)(3) | 1994 | $5.4 million | 2025-06 | ||
| Institute of Infection Prevention and Control | Health care | 501(c)(3) | 2019 | $0 | $0 | 2023-12 |
| International Association of Fire Fighters | 501(c)(5) | 1959 | $0 | $0 | 2025-03 | |
| International Association of Lions Club | 501(c)(4) | 1940 | $0 | $0 | 2024-06 | |
| International Association of Lions Clubs | 501(c)(4) | 1971 | $0 | $0 | 2026-06 | |
| International Association of Lions Clubs | 501(c)(4) | 1940 | $0 | $0 | 2026-06 | |
| International Association of Lions Clubs | 501(c)(4) | 1940 | $0 | $159.8 million | 2025-06 | |
| International Association of Lions Clubs | 501(c)(4) | 1940 | $0 | $0 | 2025-06 | |
| International Association of Lions Clubs | 501(c)(4) | 1969 | $0 | $0 | 2024-06 | |
| Ispiusa NFP | Public and societal benefit | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Italian American Executives of Transportation Charitable FNDTN | Education | 501(c)(3) | 2011 | $0 | $0 | 2024-12 |
| Joseph Lizzadro Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2025 | $13.4 million | 2025-12 | |
| Jubilee Children Ministries Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Khosa JG Foundation | 501(c)(3) | 1988 | $4.4 million | 2024-12 | ||
| Laurence E Herman Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2008 | $3.4 million | 2025-12 | |
| Light Church Inc | Religion-related | 501(c)(3) | 2022 | |||
| Links Inc | 501(c)(4) | 1961 | $0 | $0 | 2026-04 | |
| Madani Foundation | Religion-related | 501(c)(3) | 2024 | |||
| Madani Masjid | Religion-related | 501(c)(3) | 2018 | |||
| Mail Systems Management Association Inc | 501(c)(6) | 1997 | $0 | $0 | 2025-12 | |
| Mayslake Nature Study and Photography Club | Arts, culture and humanities | 501(c)(7) | 2009 | $0 | $0 | 2025-04 |
| Mayslake Wav NFP | 501(c)(3) | 1946 | ||||
| Michael A & Frances Halikias Charitable Trust | Human services | 501(c)(3) | 1998 | $1.6 million | 2025-06 | |
| Midwest Latin American District Council | 501(c)(3) | 1964 | ||||
| Muslim Womens Alliance | Human services | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| National Catholic Risk Retention Group Inc | Religion-related | 501(c)(3) | 1989 | |||
| Neoped Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1997 | $3,413 | 2024-12 | |
| Neuro Reach Alliance NFP | Medical research | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Nicholas D Sergi Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2020 | $688,721 | 2025-12 | |
| Noor Talents Foundation Inc | Human services | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Novak Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2008 | $161,145 | 2025-12 | |
| Oak Brook Community Church | 501(c)(3) | 1964 | 2014-12 | |||
| Oak Brook Historical Society | 501(c)(3) | 1977 | $0 | $0 | 2026-04 | |
| Oak Brook Soccer Club Incorporated | Recreation and sports | 501(c)(3) | 2010 | $0 | $0 | 2023-12 |
| Oakbrook Community Deaf Church | 501(c)(3) | 1964 | ||||
| Omega Alpha Alumni Association of the Delta Phi Fraternity | Education | 501(c)(7) | 2003 | $0 | $0 | 2024-07 |
| Pahal - Nurturing Lives NFP | Youth development | 501(c)(3) | 2023 | $7,042 | 2025-12 | |
| Palyul Changchub Dargyeling Chicago | Religion-related | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Pastoral Counseling Ministry | 501(c)(3) | 1973 | ||||
| Pawsitively Feral | Animal-related | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Puja Memorial Foundation | 501(c)(3) | 1998 | $17,406 | 2025-12 | ||
| RCCLT Foundation | 501(c)(3) | 2021 | $0 | $0 | 2025-12 | |
| Raymond J Allen and Sally J Allen Charities LTD | 501(c)(3) | 1985 | $57,784 | 2025-12 | ||
| Restoration and Recovery Foundation | 501(c)(3) | 2016 | $0 | $0 | 2025-12 | |
| Right Brain Roots Inc | Youth development | 501(c)(3) | 2026 | |||
| Rundgren Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1997 | $2.3 million | 2025-12 | |
| S & R Girgis Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2009 | $465,367 | 2025-12 | |
| Science Olympiad USA Foundation | Education | 501(c)(3) | 2020 | $0 | $0 | 2021-09 |
| Stroud Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2004 | $52,807 | 2024-12 | |
| Suleimani Youth Nature Camp | Religion-related | 501(c)(3) | 2025 | |||
| Sun Health Foundation | Diseases, disorders and medical disciplines | 501(c)(3) | 1998 | $0 | $0 | 2025-12 |
| Ted Hoyer Charitable Trust | 501(c)(3) | 1992 | $695,314 | 2025-12 | ||
| The Dr Upendra & MRS Sonal Shah Muladhar Charitable Foundation | Religion-related | 501(c)(3) | 1995 | $397,964 | 2025-12 | |
| The King Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1995 | $878,618 | 2025-09 | |
| The Tiny Fighters Org Inc | Health care | 501(c)(3) | 2026 | |||
| The Youth Sports Access & Scholarsh Ip Fund | Recreation and sports | 501(c)(3) | 2026 | |||
| Trinity Advocacy Guardians NFP | Human services | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Triumphant Living International | Religion-related | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Trout Unlimited | Animal-related | 501(c)(3) | 1972 | $0 | $0 | 2026-03 |
| Trout Unlimited | 501(c)(3) | 1972 | $0 | $0 | 2026-03 | |
| Urantia Spiritual Brotherhood | Religion-related | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Veluchamy Family Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2004 | $6,930 | 2025-12 | |
| Vikram B Reddy Foundation Inc USA | International, foreign affairs and national security | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Wawa Organization of Chicago | Arts, culture and humanities | 501(c)(3) | 2016 | $0 | $0 | 2024-12 |
| Witz Family Foundation | 501(c)(3) | 1959 | $4.1 million | 2025-12 | ||
| Women of Oak Brook | Community improvement and capacity building | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| World Federation of Neuroradiological Societies | 501(c)(6) | 1994 | $0 | $0 | 2026-06 | |
| Yung Hope Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2019 | $2.4 million | 2025-12 | |
| Zonta International | Philanthropy, voluntarism and grantmaking foundations | 501(c)(4) | 2002 | $0 | $0 | 2026-05 |
| Zonta International | 501(c)(4) | 1953 | $0 | $9.7 million | 2025-05 | |
| Zonta International | 501(c)(4) | 1953 | $0 | $0 | 2025-05 | |
| India Classical Music Society | 501(c)(3) | 1984 | $-800 | $7,026 | 2025-12 |
By cause in Oak Brook, IL
- Philanthropy, voluntarism and grantmaking foundations 39
- Religion-related 19
- Education 19
- Human services 18
- Health care 13
- Housing and shelter 12
- Community improvement and capacity building 11
- Arts, culture and humanities 10
- Recreation and sports 7
- International, foreign affairs and national security 6
- Diseases, disorders and medical disciplines 5
- Animal-related 4
- Mental health and crisis intervention 4
- Public and societal benefit 3
- Environment 3
- Medical research 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.