| Rank | Solar Energy Heating House Percentage ▼ | School District / Population |
| 1. | 1.6% | South Tama County Community School District / 8,674 |
| 2. | 1.2% | Andrew Community School District / 1,551 |
| 3. | 0.7% | Clearfield Community School District / 688 |
| 4. | 0.5% | Clear Creek-Amana Community School District / 12,321 |
| 4. | 0.5% | Williamsburg Community School District / 6,496 |
| 6. | 0.5% | East Buchanan Community School District / 2,905 |
| 7. | 0.5% | West Marshall Community School District / 4,951 |
| 8. | 0.4% | West Delaware County Community School District / 9,003 |
| 9. | 0.4% | Monticello Community School District / 6,621 |
| 10. | 0.4% | Howard-Winneshiek Community School District / 9,042 |
| 11. | 0.4% | Winterset Community School District / 8,821 |
| 12. | 0.4% | Fairfield Community School District / 15,659 |
| 13. | 0.3% | Calamus-Wheatland Community School District / 2,301 |
| 14. | 0.3% | Iowa Valley Community School District / 3,512 |
| 15. | 0.3% | Jefferson-Scranton Community School District / 6,062 |
| 16. | 0.3% | College Community School District / 24,875 |
| 16. | 0.3% | New Hampton Community School District / 7,238 |
| 18. | 0.2% | Central Lyon Community School District / 4,018 |
| 19. | 0.2% | Linn-Mar Community School District / 37,068 |
| 20. | 0.2% | Oelwein Community School District / 8,702 |
| 20. | 0.2% | Spencer Community School District / 12,952 |
| 22. | 0.2% | A-H-S-T Community School District / 3,146 |
| 23. | 0.1% | Fort Madison Community School District / 17,216 |
| 24. | 0.1% | Boone Community School District / 14,429 |
| 25. | 0.1% | Muscatine Community School District / 29,190 |
| 25. | 0.1% | Clarke Community School District / 8,023 |
| 25. | 0.1% | West Harrison Community School District / 2,638 |
| 28. | 0.1% | Lynnville-Sully Community School District / 3,164 |
| 29. | 0.1% | South Hamilton Community School District / 3,602 |
| 29. | 0.1% | Dubuque Community School District / 76,893 |
| 31. | 0.0% | Okoboji Community School District / 6,700 |
| 32. | 0.0% | Des Moines Independent Community School District / 205,612 |
Please note that we only rank locations with 'Solar Energy Heating House Percentage' data. The rank above might not be a complete list. Locations without 'Solar Energy Heating House Percentage' data are not listed.
