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Data / Nonprofits / Oklahoma / Tulsa / Mutual and membership benefit

Mutual and membership benefit nonprofits in Tulsa, OK: 17 registered with the IRS

17 mutual and membership benefit nonprofits are registered with the IRS in Tulsa, OK, 4 of them 501(c)(3) charities; the 9 that report revenue took in $54.9 million. The largest by revenue: Tulsa Fop 93 Health and Welfare Trust ($21.2 million), Tulsa Fire Fighters Health & Welfare Fund ($17 million), Sheet Metal Workers-270 Welfare Fund ($5.6 million).

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Every organization, largest by revenue first

OrganizationTypeSinceRevenueAssetsFiling
Tulsa Fop 93 Health and Welfare Trust501(c)(9)2009$21.2 million$12.6 million2025-06
Tulsa Fire Fighters Health & Welfare Fund501(c)(9)1995$17 million$5.5 million2025-06
Sheet Metal Workers-270 Welfare Fund501(c)(9)2014$5.6 million$7.7 million2026-01
One Gas Inc Veba Master Trust for Collective Bargaining Unit Former501(c)(9)2015$4.1 million$89.3 million2024-12
Transco Master Employee Welfare Benefits Trust501(c)(9)1994$3.8 million$93.4 million2025-12
Southern Hills Country Clubemployee Benefit Plan501(c)(9)2008$1.4 million$661,7382023-09
Retiree Medical Trust for Regional University System of Oklahoma501(c)(9)2009$1.1 million$29 million2025-06
Domestic Energy Producers Alliance Inc501(c)(6)2010$553,650$854,1472025-12
Oneok Inc Employees Retiree Medical Benefit Trust II501(c)(9)2007$212,604$2.5 million2024-12
Blackhawk Cares Inc501(c)(3)2024$0$02025-12
Doyle Cemetery Association501(c)(13)2022$0$02025-12
Imperial Court of All Oklahoma501(c)(3)2022$0$02024-12
Jesters of Oklahoma501(c)(3)2026$0$02025-12
Oklahoma Women Veteran Organization-Tulsa Chapter501(c)(3)2023$0$02025-12
Project Orphans Properties Inc501(c)(2)2024$0$02025-12
Rentie Grove Cemetery501(c)(13)2020$0$02025-12
Tulsa County Fraternal Order of Police Auxiliary 188501(c)(8)2020$0$02026-06

Other causes in Tulsa, OK

Every nonprofit in Tulsa, OK · Mutual and membership benefit 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.