Nonprofits in Madison, Wisconsin
Nonprofits in Madison, Wisconsin. Browse 4,170 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.
Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.
Nonprofit profiles
- Optimist International
EIN 391739351 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Optimist International
EIN 396060211 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Optimist International
EIN 396077554 · Headquarters: Madison, WI, US · Youth Development · Latest available filing year: 2011 · Primary form: IRS Form 990-N
- Optimist International
EIN 396096614 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Optimist International
EIN 396121248 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Options in Community Living Inc
EIN 391373054 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Orchard Ridge Elementary School Pto
EIN 391477540 · Headquarters: Madison, WI, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Orchard Ridge Neighborhood Association
EIN 900466660 · Headquarters: Madison, WI, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Orchestra Inc
EIN 364198703 · Headquarters: Madison, WI, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Orchid Growers Guild Inc
EIN 391546732 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Order of the Amaranth Inc Supreme Council
EIN 237614402 · Headquarters: Madison, WI, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N
- Order of the Amaranth Inc Supreme Council
EIN 237614593 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Order of the Eastern Star of the State of Wi
EIN 391487557 · Headquarters: Madison, WI, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Order of the Eastern Star of the State of Wisconsin
EIN 237534492 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Oregon Education Association
EIN 237068532 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oregon Lego 4-H Club
EIN 923457804 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Organization of Miso States Inc
EIN 161671529 · Headquarters: MADISON, WI, USA · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990
- Organization Services Inc
EIN 391034026 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Origin Theater Inc
EIN 823498178 · Headquarters: Madison, WI, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Orion Family Services Inc
EIN 392023114 · Headquarters: MADISON, WI, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- Orthopedic Assistance Overseas Inc
EIN 842170479 · Headquarters: Madison, WI, US · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oshkosh Education Association
EIN 237083797 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oshkosh Paraprofessional Education Association
EIN 391493600 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Osseo-fairchild Education Association
EIN 237086056 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Osseo-fairchild Support Education Association
EIN 371568531 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Our Future Matters Inc
EIN 850935176 · Headquarters: Madison, WI, US · Public & Societal Benefit · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Our Wisconsin Education Fund Inc
EIN 822527536 · Headquarters: MADISON, WI, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Our Wisconsin Revolution Inc
EIN 814853693 · Headquarters: MADISON, WI, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2024 · Primary form: IRS Form 990
- Out Health Inc
EIN 833018487 · Headquarters: MADISON, WI, USA · Health Care · Latest available filing year: 2022 · Primary form: IRS Form 990
- Outagamie County Farm Bureau Cooperative
EIN 390989696 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Outdoor Advertising Assoc of Wisc Assoc of Wisc
EIN 391599387 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Outreach Inc
EIN 391336583 · Headquarters: MADISON, WI, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2024 · Primary form: IRS Form 990
- Outrider Foundation Inc
EIN 391947995 · Headquarters: Madison, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Outside the Bean Ltd
EIN 510178108 · Headquarters: Madison, WI, US · Arts, Culture & Humanities · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Outside the Walls Inc
EIN 993728147 · Headquarters: Madison, WI, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Over at My Place Inc
EIN 921814312 · Headquarters: Madison, WI, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Overture Center for the Arts
EIN 010645482 · Headquarters: Madison, WI, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Overture Development Corporation
EIN 391997702 · Headquarters: MADISON, WI, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990
- Owen-withee Education Association
EIN 237086954 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Own It Building Black Wealth Inc
EIN 992609895 · Headquarters: Madison, WI, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Ozaukee County Area Retired Teachers Association
EIN 800484911 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Ozaukee County Medical Society
EIN 270372237 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Pain Research Foundation Inc
EIN 274356522 · Headquarters: MADISON, WI, US · Medical Research · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Painters Local 802 Health and Welfare Fund
EIN 396078181 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Painters Local Union 802 Apprenticeship and Training Fund
EIN 391546758 · Headquarters: MADISON, WI, USA · Education · Latest available filing year: 2023 · Primary form: IRS Form 990
- Painting & Decorating Contractors of America
EIN 237355093 · Headquarters: Madison, WI, US · Arts, Culture & Humanities · Latest available filing year: 2008 · Primary form: IRS Form 990-N
- Pakistani Physicians Society of Wis Consin
EIN 453933282 · Headquarters: Madison, WI, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Palestine Partners Inc
EIN 853288742 · Headquarters: Madison, WI, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Pardeeville Education Association
EIN 237098443 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Parents and Children in Action
EIN 842927551 · Headquarters: Madison, WI, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Park Falls Education Association
EIN 237083197 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Parkcrest Swim & Tennis Club Inc
EIN 391085273 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Parkview Schools Education Association
EIN 237080898 · Headquarters: MADISON, WI, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Participatory Learning and Teaching
EIN 264388226 · Headquarters: MADISON, WI, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Pathnote Foundation Inc C/o John Suby
EIN 810927994 · Headquarters: MADISON, WI, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2022 · Primary form: IRS Form 990-PF
- Pathways of Wisconsin Inc
EIN 391305303 · Headquarters: MADISON, WI, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- Patricia J Ruegsegger Family Foundation
EIN 934336099 · Headquarters: Madison, WI, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Patrick and Lee Baxter Family Foundation Inc
EIN 472206687 · Headquarters: MADISON, WI, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Patriot Flight Foundation Inc
EIN 412939650 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Patriots Youth Hockey Association
EIN 237173506 · Headquarters: MADISON, WI, USA · Recreation & Sports · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ
- Pawws to Heal
EIN 201474243 · Headquarters: Madison, WI, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Payback Club Inc
EIN 272475373 · Headquarters: Madison, WI, US · Mental Health & Crisis Intervention · Latest available filing year: 2013 · Primary form: IRS Form 990-N
- Pecatonica Council Auxiliary Personnel
EIN 262904498 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Pecatonica Teacher Education Association
EIN 331104194 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Pedal for the House Inc
EIN 271178646 · Headquarters: Madison, WI, US · Human Services · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Pembine Education Association
EIN 391371882 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Penn State Alumni Association
EIN 452401701 · Headquarters: Madison, WI, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Pennsylvania Lung Cancer Partnership
EIN 271058053 · Headquarters: MADISON, WI, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2014 · Primary form: IRS Form 990
- People Building Opportunity Through Grace and Action Inc
EIN 030609771 · Headquarters: Madison, WI, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- People's Welfare Association
EIN 834705654 · Headquarters: MADISON, WI, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990
- Peoples Law Center
EIN 883675951 · Headquarters: Madison, WI, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Pepartnership
EIN 454088209 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Perch Lake Owners Association
EIN 611695764 · Headquarters: Madison, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Perfect Harmony Chorus Inc
EIN 320052707 · Headquarters: MADISON, WI, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Permanent Anchors in Christ Ministries Inc
EIN 991605143 · Headquarters: Madison, WI, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Peshtigo Education Association
EIN 237088293 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Peshtigo Education Support Professionals Association
EIN 391763729 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Pet Loss Resource Center
EIN 813393657 · Headquarters: Madison, WI, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Pewaukee Education Association
EIN 237078928 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Pharmacy Society of Wisconsin Inc
EIN 390714490 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Phelps Education Association
EIN 391980108 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Phi Delta Theta Fraternity Wi Alpha
EIN 472444659 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Phi Gamma Delta Fraternity
EIN 262162009 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Phi Kappa Psi Fraternity
EIN 452554324 · Headquarters: Madison, WI, US · Education · Latest available filing year: 2011 · Primary form: IRS Form 990-N
- Phi Kappa Tau Fraternity
EIN 391515458 · Headquarters: Madison, WI, US · Education · Latest available filing year: 2007 · Primary form: IRS Form 990-N
- Phi Kappa Theta
EIN 471020299 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Phi Kappa Theta Wisconsin Lambda Alumni Board Corp
EIN 352699161 · Headquarters: Madison, WI, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Phi Upsilon Omicron Inc
EIN 396127477 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Phikappasigmafraternity
EIN 262513599 · Headquarters: MADISON, WI, US · Education · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Philharmonic Chorus of Madison
EIN 396077975 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Philip Falk Elementary School Parent Teacher Organization Inc
EIN 237162781 · Headquarters: Madison, WI, US · Education · Latest available filing year: 2011 · Primary form: IRS Form 990-N
- Philippine-american Association of Madison and Neighboring Areas Inc
EIN 391849861 · Headquarters: Madison, WI, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Phillips Education Assoc
EIN 237085614 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Phoenix Lacrosse Club
EIN 844269966 · Headquarters: Madison, WI, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Physicians for a National Health Program
EIN 800536690 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Physicians For Social Responsibility Wisconsin Inc
EIN 391371810 · Headquarters: Madison, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Pi Kappa Alpha Fraternity Beta Xi Chapter
EIN 200844569 · Headquarters: Madison, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Pi Kappa Alpha Union
EIN 426057254 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Pi Kappa Phi Fraternity
EIN 810783941 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Pi Lambda Phi Fraternity
EIN 391523090 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N