Data / Nonprofits / Oklahoma / Stillwater / Education
Education nonprofits in Stillwater, OK: 58 registered with the IRS
58 education nonprofits are registered with the IRS in Stillwater, OK, 52 of them 501(c)(3) charities; the 17 that report revenue took in $290.1 million. The largest by revenue: Oklahoma State University Foundation ($272.9 million), Oklahoma State University Alumni Association ($5.4 million), Foundation for the McKnight Center for the Performing Arts ($3.4 million).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|
| Oklahoma State University Foundation | 501(c)(3) | 1963 | $272.9 million | $1.67 billion | 2025-06 |
| Oklahoma State University Alumni Association | 501(c)(3) | 1956 | $5.4 million | $28.6 million | 2025-06 |
| Foundation for the McKnight Center for the Performing Arts | 501(c)(3) | 2016 | $3.4 million | $64 million | 2025-06 |
| Oklahoma State University Research Foundation Inc | 501(c)(3) | 1969 | $2.3 million | $10.7 million | 2024-06 |
| Stillwater Christian School Inc | 501(c)(3) | 2004 | $1.3 million | $992,067 | 2025-06 |
| Foundation for Engineering at Oklahoma State University Inc | 501(c)(3) | 2009 | $1 million | $169.3 million | 2025-06 |
| Kappa Kappa Psi Fraternity | 501(c)(3) | 1976 | $795,082 | $1.6 million | 2024-05 |
| Covenant Community School Inc | 501(c)(3) | 2024 | $767,861 | $952,698 | 2025-06 |
| Health Occupations Students of America | 501(c)(3) | 1982 | $467,017 | $499,473 | 2025-08 |
| Gamma Zeta | 501(c)(7) | 2025 | $458,171 | $1.2 million | 2024-12 |
| Stillwater Delta Tau Delta Corp | 501(c)(7) | 2021 | $444,258 | $6.4 million | 2025-06 |
| Stillwater Public Education Foundation | 501(c)(3) | 1986 | $257,187 | $1.2 million | 2024-12 |
| Stillwater High Student Activity Foundation Endowment | 501(c)(3) | 2008 | $219,994 | $1.1 million | 2025-12 |
| Osu Animal Science Alumni Association | 501(c)(3) | 2023 | $101,712 | $16,964 | 2025-06 |
| Sangre Ridge Elementary Pto | 501(c)(3) | 2020 | $65,508 | $2,390 | 2024-12 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $64,409 | $24,442 | 2025-06 |
| Greek Neighborhood Association of Stillwater Oklahoma Incorporated | 501(c)(3) | 2016 | $58,924 | $302,926 | 2025-12 |
| Administration Division of the Oklahoma Association of Career & T | 501(c)(6) | 2014 | $0 | $0 | 2025-06 |
| Alpha Omicron Pi Omega Sigma Parent S Club | 501(c)(3) | 2026 | | | |
| Altrusa International Foundation Inc | 501(c)(3) | 1985 | $0 | $0 | 2026-05 |
| American Collegiate Retailing Association | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Books Over the World Inc | 501(c)(3) | 2020 | $0 | $0 | 2024-12 |
| Cowboy Hockey Incorporated | 501(c)(3) | 2024 | | | |
| DH Rep Inc | 501(c)(3) | 2025 | | | |
| Frank Pistol Pete Eaton Legacy Foundation | 501(c)(3) | 2023 | | $6,008 | 2025-12 |
| Genealogy Partners of the Stillwater Library | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Highlands Latin School Stillwater I NC | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Kappa Kappa Gamma Fraternity Inc Delta Sigma House Corp | 501(c)(7) | 1974 | | | 2019-06 |
| Karsten Foundation Inc | 501(c)(3) | 2026 | | | |
| Lady Pioneers Basketball Booster | 501(c)(3) | 2024 | | | |
| National Agricultural Communicators of Tomorrow | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| National Association of Extension Program and Staff Development Prof | 501(c)(3) | 2014 | | $122,790 | 2025-12 |
| Oklahoma Academic Advising Assoc Oacada | 501(c)(3) | 2024 | | | |
| Oklahoma Assoc of Career & Tech Ed Business & Info Tech Education | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| Oklahoma Association for Institutio Nal Research | 501(c)(3) | 2011 | $0 | $0 | 2023-12 |
| Oklahoma Section Society for Range Management | 501(c)(3) | 1999 | $0 | $0 | 2025-12 |
| Oklahoma State University Emeriti Association | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Osu Pi Kappa Alpha Parents Club Inc | 501(c)(3) | 2022 | $0 | $0 | 2026-06 |
| Osu Pi Kappa Phi Family Association | 501(c)(3) | 2026 | | | |
| Perkins-Tryon Alumni Association | 501(c)(3) | 2026 | | | |
| Phi Eta Sigma National Honor Society Inc | 501(c)(3) | 2014 | | | |
| Richmond Parent Teacher Organizatio N Inc | 501(c)(3) | 2026 | | | |
| Stillwater Christian School Pto Inc | 501(c)(3) | 2026 | | | |
| Stillwater Cross Country | 501(c)(3) | 2026 | | | |
| Stillwater High School Cheer Boosters | 501(c)(3) | 2023 | $0 | $0 | 2026-06 |
| Stillwater High School Pto | 501(c)(3) | 2026 | | | |
| Stillwater Junior High School Pto | 501(c)(3) | 2025 | | | |
| Stillwater Literacy Council | 501(c)(3) | 1997 | $0 | $0 | 2025-12 |
| Stillwater Middle School Pto | 501(c)(3) | 2024 | $0 | $0 | 2025-06 |
| Stillwater Pioneer Athlete Memorial Inc | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Stillwater Pioneer Robotics Program Booster Club | 501(c)(3) | 2026 | | | |
| Stillwater Pioneers Boys Basketball Booster Club | 501(c)(3) | 2023 | $0 | $0 | 2026-06 |
| Stillwater Sister School Exchange Booster | 501(c)(3) | 2025 | $0 | $0 | 2025-06 |
| Supporting Stillwater Homeschoolers | 501(c)(3) | 2014 | $0 | $0 | 2023-12 |
| The Oklahoma Association Teachers of Family and Consumer Sciences | 501(c)(6) | 2010 | $0 | $0 | 2025-06 |
| Theta Education Fund | 501(c)(3) | 2022 | $0 | $1.3 million | 2025-06 |
| Universidad Popular Autonoma Del Estado de Puebla | 501(c)(3) | 2022 | | $1,587 | 2025-12 |
| Westwood Elementary Pto | 501(c)(3) | 2020 | $0 | $0 | 2024-12 |
Other causes in Stillwater, OK
Every nonprofit in Stillwater, OK · Education nonprofits across the state · 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.