Provisional. Ranked October 7, 2026 from the filings the IRS had published by then. Organizations have up to 10½ months after their year ends to file, so the list will change as the rest arrive.
| Rank | National | Organization | Growth | Revenue |
|---|---|---|---|---|
| 1 | 55 | Maine Museum of Innovation Lewiston, ME · Arts and culture | 2,073% | $261K → $5.7M |
| 2 | 258 | Indigenous Peoples Rights INC West Boothbay Harbor, ME · Human services | 620% | $443K → $3.2M |
| 3 | 382 | Trinity Jubilee Center Inc Lewiston, ME · Food and agriculture | 471% | $666K → $3.8M |
| 4 | 469 | Maine Aquaculture Innovation Center Walpole, ME · Food and agriculture | 393% | $484K → $2.4M |
| 5 | 600 | Habitat for Humanity Kennebunk, ME | 325% | $631K → $2.7M |
| 6 | 611 | Maine Center for Public Interest Reporting Hallowell, ME · Arts and culture | 318% | $562K → $2.3M |
| 7 | 627 | Four Directions Development Corporation Orono, ME · Housing | 310% | $1.6M → $6.5M |
| 8 | 710 | Western Foothills Land Trust Norway, ME | 283% | $827K → $3.2M |
| 9 | 728 | Big Rock Mars Hill, ME · Recreation and sports | 278% | $953K → $3.6M |
| 10 | 783 | Sanford Library Association INC Sanford, ME | 262% | $946K → $3.4M |
| 11 | 836 | South Portland Housing Development Corp South Portland, ME · Housing | 248% | $2.0M → $7.1M |
| 12 | 907 | Frenchman Bay Conservancy Hancock, ME · Environment | 234% | $1.2M → $3.9M |
| 13 | 910 | MIDCOAST YOUTH CENTER & skatepark Bath, ME · Youth development | 234% | $650K → $2.2M |
| 14 | 973 | Fair Tide Kittery, ME · Housing | 222% | $1.2M → $3.9M |