Data / Nonprofits / Maine / Monmouth
Nonprofits in Monmouth, ME: 22 registered with the IRS
22 nonprofits are registered with the IRS in Monmouth, ME, 16 of them 501(c)(3) charities; the 5 that report revenue took in $1.1 million. The largest by revenue: Theater at Monmouth ($489,959), Monmouth Water Association ($380,464), One Big Sustainable Island ($149,655). Most common causes: arts, culture and humanities (5).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Theater at Monmouth | Arts, culture and humanities | 501(c)(3) | 1972 | $489,959 | $1.1 million | 2025-12 |
| Monmouth Water Association | 501(c)(12) | 1971 | $380,464 | $5.5 million | 2025-12 | |
| One Big Sustainable Island | Environment | 501(c)(3) | 2015 | $149,655 | $150,804 | 2025-12 |
| Monmouth Community Players | Arts, culture and humanities | 501(c)(3) | 2021 | $89,811 | $97,063 | 2025-12 |
| Monmouth Museum | Arts, culture and humanities | 501(c)(3) | 1979 | $20,585 | $291,179 | 2024-12 |
| American Legion | 501(c)(19) | 1946 | $0 | $0 | 2024-12 | |
| Ancient Free & Accepted Masons of Maine | 501(c)(10) | 1941 | $0 | $0 | 2024-12 | |
| Brenda Marie Foundation | Health care | 501(c)(3) | 2010 | $0 | $0 | 2026-03 |
| Cochnewagon Lake Preservation Assoc Iation | Environment | 501(c)(3) | 2026 | $0 | $0 | 2026-06 |
| Cottrell Taylor Memorial Fund | Human services | 501(c)(3) | 2024 | $0 | $0 | 2024-06 |
| Cumston Free Public Library Association | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 1995 | $0 | $0 | 2024-06 |
| Fiddle-Icious | Arts, culture and humanities | 501(c)(3) | 2008 | $0 | $0 | 2025-12 |
| Friends of Cumston Hall | Education | 501(c)(3) | 1997 | $0 | $0 | 2025-12 |
| Future Business Leaders of America Phi Beta Lambda Inc | 501(c)(3) | 1971 | ||||
| International Association of Lions Clubs | 501(c)(4) | 1966 | $0 | $0 | 2024-06 | |
| Monmouth Firehouse Museum | Arts, culture and humanities | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Monmouth Parent Teacher Organization | Education | 501(c)(3) | 2016 | $0 | $0 | 2025-08 |
| Monmouth Youth Baseball-Softball | Recreation and sports | 501(c)(3) | 2026 | |||
| National Society of the Daughters of the American Revolution | 501(c)(3) | 1949 | $0 | $0 | 2026-04 | |
| Patrons of Husbandry Maine State Grange | 501(c)(8) | 1972 | $0 | $0 | 2025-09 | |
| Squire Town Squares | 501(c)(7) | 1974 | $0 | $0 | 2026-04 | |
| U S Army Caisson Platoon Association of Military Horsemen | Public and societal benefit | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
By cause in Monmouth, ME
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.