Data / Nonprofits / Massachusetts / South Dennis
Nonprofits in South Dennis, MA: 43 registered with the IRS
43 nonprofits are registered with the IRS in South Dennis, MA, 34 of them 501(c)(3) charities; the 21 that report revenue took in $70.7 million. The largest by revenue: Elder Services of Cape Cod and the Islands Inc ($67.4 million), The Scargo School Inc ($925,837), Mid Cape Ice Arena Inc ($704,702). Most common causes: education (6), human services (5), philanthropy, voluntarism and grantmaking foundations (3).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Elder Services of Cape Cod and the Islands Inc | Human services | 501(c)(3) | 1973 | $67.4 million | $25.7 million | 2025-06 |
| The Scargo School Inc | Education | 501(c)(3) | 1967 | $925,837 | $790,080 | 2025-07 |
| Mid Cape Ice Arena Inc | 501(c)(3) | 1985 | $704,702 | $768,803 | 2025-06 | |
| Dennis-Yarmouth Educators Association | Employment | 501(c)(5) | 2025 | $297,815 | $224,131 | 2025-07 |
| Dennis Historical Society | 501(c)(3) | 1978 | $248,091 | $1 million | 2025-12 | |
| Rotary Club of Harwich-Dennis Good Works Foundation | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2011 | $202,039 | $387,934 | 2025-06 |
| Yarmouth-Dennis Youth Hockey Assoc Inc | Youth development | 501(c)(3) | 2003 | $197,006 | $267,434 | 2025-06 |
| South Dennis Free Public Library Association Inc | 501(c)(3) | 1971 | $124,724 | $332,595 | 2026-06 | |
| Cape Cod Senior Softball League | Recreation and sports | 501(c)(3) | 1997 | $111,147 | $96,179 | 2025-10 |
| Sight Loss Services Inc | 501(c)(3) | 1992 | $109,789 | $175,973 | 2024-12 | |
| Liberty Hall | 501(c)(3) | 1984 | $84,796 | $1.4 million | 2025-12 | |
| Dennis Yarmouth Youth Baseball Association Inc | Youth development | 501(c)(3) | 2017 | $72,269 | $24,068 | 2025-12 |
| Andrea Holden Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2010 | $60,128 | $50,501 | 2025-12 |
| Rotary International | 501(c)(4) | 1966 | $58,827 | $274,385 | 2025-06 | |
| Cape Cod Police K-9 Relief Fund | Animal-related | 501(c)(3) | 2004 | $50,000 | $319,230 | 2025-12 |
| Eastern Inter-Club League Inc | 501(c)(7) | 1984 | $30,783 | $53,416 | 2024-06 | |
| Friends of Dennis Senior Citizens Inc | Human services | 501(c)(3) | 1979 | $30,404 | $496,191 | 2025-06 |
| Friends of Dennis Recreation Inc | Education | 501(c)(3) | 2019 | $20,815 | $12,307 | 2024-12 |
| Lyme Awareness of Cape Cod Inc | Education | 501(c)(3) | 2009 | $9,643 | $46,375 | 2023-12 |
| The Retired Mens Club of Cape Cod Massachusetts | 501(c)(7) | 1969 | $8,132 | $11,067 | 2025-12 | |
| Agway of Cape Cod Charitable Foundation Inc | Philanthropy, voluntarism and grantmaking foundations | 501(c)(3) | 2016 | $2,566 | $12,335 | 2025-12 |
| Amercian Legion | 501(c)(19) | 1946 | $0 | $0 | 2024-12 | |
| Barnstable County Incident Management Association | Public safety, disaster preparedness and relief | 501(c)(3) | 2017 | $0 | $0 | 2025-10 |
| Bay To Sound Neighbors Inc | Human services | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Cape Cod Classic Car Foundation | Education | 501(c)(3) | 2024 | $13,665 | 2025-12 | |
| Cape Cod Classics Car Club | Community improvement and capacity building | 501(c)(4) | 2006 | $0 | $0 | 2025-12 |
| Cape Cod Covenant Church-Brewster Ma | 501(c)(3) | 1975 | 2013-12 | |||
| Cape Cod LGBTQ Senior Friends Inc | Human services | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Cape Cod Plumbing & Gasfitting Association Inc | Education | 501(c)(3) | 2014 | $0 | $0 | 2026-06 |
| Cape Cod Quilters | Human services | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Chamberlain Foundation | 501(c)(3) | 1982 | $811,076 | 2025-10 | ||
| Church of the Nazarene | 501(c)(3) | 1963 | ||||
| Dennis Police Association Inc | 501(c)(3) | 1981 | $0 | $0 | 2024-12 | |
| Destiny Coffeehouse Fellowship Inc | Religion-related | 501(c)(3) | 2018 | $0 | $0 | 2023-12 |
| Field of Honor in Dennis | Arts, culture and humanities | 501(c)(3) | 2025 | |||
| Knights of Columbus | 501(c)(8) | 1940 | $0 | $0 | 2025-12 | |
| Knights of Columbus | 501(c)(8) | 1982 | $0 | $0 | 2025-12 | |
| Nathaniel H Wixon Innovation School Parent Teacher Organization | Education | 501(c)(3) | 2014 | $0 | $0 | 2023-06 |
| Old South Dennis Village Association Inc | Arts, culture and humanities | 501(c)(3) | 1993 | $0 | $0 | 2024-12 |
| Swan Lake Cemetery Association Inc | Mutual and membership benefit | 501(c)(13) | 2016 | $0 | $0 | 2025-12 |
| Tabernacle of the Holy Ministry I NC | Religion-related | 501(c)(3) | 2025 | |||
| The Cindy Fund | 501(c)(3) | 2020 | $0 | $0 | 2025-12 | |
| Wicked Good Dogs Charity Inc | Animal-related | 501(c)(3) | 2025 |
By cause in South Dennis, MA
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.