Data / Nonprofits / Florida / Marathon / Animal-related
Animal-related nonprofits in Marathon, FL: 9 registered with the IRS
9 animal-related nonprofits are registered with the IRS in Marathon, FL, 9 of them 501(c)(3) charities; the 7 that report revenue took in $6.1 million. The largest by revenue: Hidden Harbor Marine Environmental Project Inc ($5.4 million), Safe Harbor Animal Rescue of the Keys Incorpporated ($378,775), Marathon Wild Bird Center Inc ($194,370).
SpecStream is the live web data engine for teams and agents. It reads the IRS register of exempt organizations as the IRS updates it, and this page is that reading. Ask for the nonprofits you need by place, cause and size, with their latest Form 990 figures and websites, and they arrive in your sheet, CRM, Slack or agent.
Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Hidden Harbor Marine Environmental Project Inc | 501(c)(3) | 1992 | $5.4 million | $16.8 million | 2025-12 |
| Safe Harbor Animal Rescue of the Keys Incorpporated | 501(c)(3) | 2014 | $378,775 | $51,863 | 2014-12 |
| Marathon Wild Bird Center Inc | 501(c)(3) | 2000 | $194,370 | $106,876 | 2025-12 |
| Paytons Promise Inc | 501(c)(3) | 2022 | $104,195 | $44,025 | 2025-12 |
| Whiskers & Paws Forever of Monroecounty Inc | 501(c)(3) | 2007 | $11,113 | $1 | 2025-12 |
| Arkwild Inc | 501(c)(3) | 1999 | $2,477 | $5,329 | 2025-12 |
| Marathon Animal Shelter | 501(c)(3) | 1998 | $2,190 | $636,050 | 2025-12 |
| Forgotten Felines of the Florida Keys Inc | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| R3each Inc | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
Other causes in Marathon, FL
- Human services 10
- Public safety, disaster preparedness and relief 5
- Environment 5
- Education 4
- Public and societal benefit 4
- Religion-related 4
- Community improvement and capacity building 3
- Philanthropy, voluntarism and grantmaking foundations 3
- Employment 3
- Youth development 3
- Arts, culture and humanities 3
Every nonprofit in Marathon, FL · Animal-related 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.