Data / Nonprofits / Missouri / Saint Louis / Mutual and membership benefit
Mutual and membership benefit nonprofits in Saint Louis, MO: 39 registered with the IRS
39 mutual and membership benefit nonprofits are registered with the IRS in Saint Louis, MO, 11 of them 501(c)(3) charities; the 20 that report revenue took in $726.2 million. The largest by revenue: Ascension Health Professional and General Liability Self-Insurance ($286 million), Ascension Welfare Benefits Trust ($191.4 million), Ameren Active Employee Healthcare Trust ($164.6 million).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|
| Ascension Health Professional and General Liability Self-Insurance | 501(c)(3) | 2006 | $286 million | $711.6 million | 2025-06 |
| Ascension Welfare Benefits Trust | 501(c)(9) | 2001 | $191.4 million | $172.4 million | 2024-12 |
| Ameren Active Employee Healthcare Trust | 501(c)(9) | 2023 | $164.6 million | $15.4 million | 2024-12 |
| SSMHCS Liability Trust Mercantile Bank Ttee | 501(c)(3) | 1987 | $51.4 million | $205.1 million | 2024-12 |
| St Louis Labor Healthcare Network | 501(c)(9) | 2011 | $14.1 million | $56 million | 2025-06 |
| Moneta Group Employee Benefit Plan Trust | 501(c)(9) | 2016 | $6.3 million | $4 million | 2024-12 |
| Alton Ibew-Neca Health & Welfare PL | 501(c)(9) | 2006 | $5.6 million | $9 million | 2025-10 |
| Unite Here Local 74 Welfare and Dental Trust | 501(c)(9) | 1953 | $3.2 million | $1.1 million | 2024-12 |
| Peabody Investments Corp Non-Represented Retiree Veba Trust | 501(c)(9) | 2020 | $1.6 million | $9.1 million | 2025-12 |
| Local 649 Sub and Welfare Fund | 501(c)(9) | 1999 | $509,040 | $9.5 million | 2025-08 |
| Ibew-Neca Income Security Fund | 501(c)(9) | 2000 | $430,920 | $4.2 million | 2024-12 |
| United Cemetery Association Inc | 501(c)(13) | 2000 | $302,812 | $33,229 | 2024-12 |
| Peace Cemetery Management | 501(c)(13) | 2013 | $236,786 | $1.4 million | 2025-12 |
| Antique Phonograph Society | 501(c)(3) | 2014 | $108,119 | $53,973 | 2024-12 |
| St Trinity Lutheran Cemetery Trust | 501(c)(25) | 2017 | $81,881 | $658,615 | 2025-12 |
| Mid-County Fire Protection District Post-Retirement Medical | 501(c)(9) | 2010 | $65,101 | $537,673 | 2025-12 |
| Littleton Cemetery Association Endowment Trust | 501(c)(13) | 1998 | $30,039 | $525,552 | 2025-12 |
| International Health Literacy Association Inc | 501(c)(3) | 2020 | $27,255 | $61,161 | 2025-12 |
| Santa Cruz Building Association | 501(c)(10) | 2019 | $12,730 | $919,019 | 2025-06 |
| Pine Hill Cemetery Trust Assoc 1519056403 | 501(c)(13) | 1994 | $9,824 | $260,462 | 2025-12 |
| Ancient and Free Accepted Masons of Missouri | 501(c)(10) | 1940 | $0 | $0 | 2025-12 |
| Ancient and Free Accepted Masons of Missouri | 501(c)(8) | 2017 | $0 | $0 | 2025-08 |
| East St Louis Alumni Chapter of Kappa Alpha Psi Fraternity Inc | 501(c)(7) | 2014 | $0 | $0 | 2025-09 |
| Elm Lawn Evangelical Cemetery Association | 501(c)(13) | 2017 | $0 | $0 | 2025-12 |
| Gateway Greening Land Trust Inc | 501(c)(2) | 2013 | $0 | $0 | 2024-12 |
| Girlfrienz | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Gwin Samuel Butler Memorial Fund | 501(c)(3) | 2010 | | $728,214 | 2025-12 |
| Herrington Cemetery Association | 501(c)(13) | 2016 | $0 | $0 | 2025-12 |
| Iatse Local 143 Training Trust Fund | 501(c)(9) | 2019 | $0 | $0 | 2024-12 |
| Iatse Local 6 Training Trust Fund | 501(c)(9) | 2019 | $0 | $0 | 2025-12 |
| James C Stewart Charitable Foundation | 501(c)(3) | 2014 | | $1.4 million | 2025-12 |
| Knights of Columbus | 501(c)(8) | 1940 | $0 | $0 | 2025-12 |
| Marguirete S Ross Testamentary Trust | 501(c)(3) | 1988 | | $470,755 | 2025-04 |
| Masonic Temple Charitable Trust | 501(c)(3) | 1986 | | $675,467 | 2025-06 |
| St Louis Building Trades Wellness Coalition Corporation | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| St Louis Officials Association | 501(c)(6) | 2014 | $0 | $0 | 2026-02 |
| St Louis Symphony Orchestra Musicians Association Health & Welfare Trust | 501(c)(9) | 2009 | $0 | $0 | 2025-12 |
| Sydk Temple No 107 Daughters of the Nile | 501(c)(10) | 2024 | $0 | $0 | 2026-03 |
| The Association of the Bar of the United States Court of Appeals for | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
Other causes in Saint Louis, MO
Every nonprofit in Saint Louis, MO · 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.