Data / Nonprofits / Maine / Southwest HBR
Nonprofits in Southwest HBR, ME: 21 registered with the IRS
21 nonprofits are registered with the IRS in Southwest HBR, ME, 16 of them 501(c)(3) charities; the 12 that report revenue took in $6.2 million. The largest by revenue: Causeway Club Inc ($1.5 million), Harbor House Community Service Center ($1.5 million), Southwest Harbor-Tremont Nursing Service Inc ($1.1 million).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Causeway Club Inc | Recreation and sports | 501(c)(7) | 2014 | $1.5 million | $3.7 million | 2025-12 |
| Harbor House Community Service Center | Community improvement and capacity building | 501(c)(3) | 1965 | $1.5 million | $5 million | 2025-12 |
| Southwest Harbor-Tremont Nursing Service Inc | 501(c)(3) | 1960 | $1.1 million | $1.6 million | 2025-12 | |
| Mount Desert Island Community Sailing and Maritime Education | 501(c)(3) | 2007 | $624,761 | $2.8 million | 2025-12 | |
| Wendell Gilley Museum of Bird Carving the | Arts, culture and humanities | 501(c)(3) | 1980 | $444,389 | $5.7 million | 2024-12 |
| Common Good Soup Kitchen Community | Human services | 501(c)(3) | 2012 | $224,422 | $136,544 | 2024-12 |
| Acadia Senior College | Education | 501(c)(3) | 2005 | $163,686 | $553,977 | 2025-06 |
| Accreditation Council for Art Therapy Education | Education | 501(c)(3) | 2024 | $159,090 | $66,446 | 2025-12 |
| Southwest Harbor & Tremont Chamber of Commerce | 501(c)(6) | 1945 | $147,562 | $28,645 | 2025-12 | |
| Summer Festival of the Arts | Arts, culture and humanities | 501(c)(3) | 2002 | $130,441 | $4,778 | 2025-09 |
| Mount Desert Island Lions Charities Inc | Community improvement and capacity building | 501(c)(3) | 1995 | $69,607 | $75,870 | 2025-06 |
| Safe Harbor Alano Club | Mental health and crisis intervention | 501(c)(3) | 2024 | $62,862 | $309,882 | 2025-12 |
| American Legion | 501(c)(19) | 1946 | $0 | $0 | 2025-12 | |
| Ancient Free & Accepted Masons of Maine | 501(c)(10) | 1941 | $0 | $0 | 2025-03 | |
| Astronomy Institute of Maine | Science and technology | 501(c)(3) | 2006 | $0 | $0 | 2024-12 |
| Gotts Island Association | Human services | 501(c)(3) | 1999 | $0 | $0 | 2025-12 |
| Mt Height Cemetery Assoc | 501(c)(13) | 1973 | $0 | $0 | 2025-12 | |
| Southwest Harbor Historical Society | 501(c)(3) | 2010 | $0 | $0 | 2025-08 | |
| Southwest Harbor Public Library | 501(c)(3) | 1943 | 2024-12 | |||
| St Andrew & St John Church | 501(c)(3) | 1940 | ||||
| Stockholm Heritage Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2007 | $0 | $0 | 2025-06 |
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.