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 | 29 | Harvest Preserve Foundation INC Iowa City, IA · Religion related | 2,916% | $204K → $6.1M |
| 2 | 93 | Italian-American Cultural Center of Iowa Des Moines, IA · Arts and culture | 1,484% | $543K → $8.6M |
| 3 | 145 | The Legacy Foundation Sioux City, IA · Education | 962% | $459K → $4.9M |
| 4 | 178 | The Dream Center Iowa City, IA | 816% | $257K → $2.4M |
| 5 | 186 | Neighborhood Investment Corporation Des Moines, IA · Community improvement | 791% | $246K → $2.2M |
| 6 | 200 | The Art Center Association of Sioux City Sioux City, IA | 769% | $327K → $2.8M |
| 7 | 293 | Cedar Valley Habitat for Humanity Cedar Rapids, IA | 558% | $394K → $2.6M |
| 8 | 470 | Practical Farmers of Iowa Ames, IA | 392% | $4.6M → $22.4M |
| 9 | 557 | Kingdom Living Iowa Des Moines, IA · Human services | 344% | $516K → $2.3M |
| 10 | 614 | Bioconnect Iowa Des Moines, IA · Community improvement | 317% | $1.7M → $7.1M |
| 11 | 659 | Civic Music Association Des Moines Des Moines, IA · Arts and culture | 300% | $523K → $2.1M |
| 12 | 692 | Pathfinders Rc&d Fairfield, IA · Environment | 291% | $574K → $2.2M |
| 13 | 811 | Ballet Des Moines Des Moines, IA · Arts and culture | 253% | $858K → $3.0M |
| 14 | 857 | Iowa Confluence Water Trails Des Moines, IA · Environment | 243% | $3.0M → $10.4M |