Data / Nonprofits / New Hampshire / Alton Bay
Nonprofits in Alton Bay, NH: 15 registered with the IRS
15 nonprofits are registered with the IRS in Alton Bay, NH, 10 of them 501(c)(3) charities; the 5 that report revenue took in $2.8 million. The largest by revenue: John & Anna Newton Porter Foundation ($2.4 million), Island Marina Association ($198,987), Alton Shores Association Inc ($86,554).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| John & Anna Newton Porter Foundation | 501(c)(3) | 1974 | $2.4 million | $7 million | 2024-12 | |
| Island Marina Association | 501(c)(7) | 1990 | $198,987 | $411,021 | 2025-12 | |
| Alton Shores Association Inc | 501(c)(4) | 1982 | $86,554 | $424,215 | 2025-12 | |
| 83RD Infantry Division Association | 501(c)(4) | 1964 | $47,222 | $21,525 | 2025-12 | |
| Carpenters Workshop Inc | Human services | 501(c)(3) | 2003 | $26,370 | $103,707 | 2024-12 |
| Advent Christian Church | 501(c)(3) | 1958 | ||||
| Alton Bay Camp Meeting Association | 501(c)(3) | 1958 | ||||
| Amenyo Corporation | Public and societal benefit | 501(c)(3) | 2014 | $0 | $11,506 | 2025-12 |
| Mt Major Snowmobile Club Inc | Recreation and sports | 501(c)(4) | 2010 | $0 | $0 | 2026-06 |
| NH Velocity Cheer | Recreation and sports | 501(c)(3) | 2023 | $0 | $0 | 2023-12 |
| New Hampshire Old Graveyard Association Inc | 501(c)(3) | 2019 | $0 | $0 | 2026-04 | |
| Rotary International | 501(c)(4) | 1942 | $0 | $0 | 2025-06 | |
| Safebeat Inc | Health care | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| United States Power Squadrons | 501(c)(3) | 1949 | $0 | $0 | 2025-12 | |
| United States Power Squadrons | 501(c)(3) | 1967 | $0 | $0 | 2025-12 |
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.