The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
| County | Housing Affordability Index | |
|---|---|---|
| 1. | Aroostook County | 188 |
| 2. | Somerset County | 179 |
| 3. | Franklin County | 172 |
| 4. | Washington County | 167 |
| 5. | Piscataquis County | 164 |
| 6. | Oxford County | 164 |
| 7. | Kennebec County | 162 |
| 8. | Penobscot County | 160 |
| 9. | Androscoggin County | 145 |
| 10. | Waldo County | 141 |
| 11. | Knox County | 138 |
| 12. | Lincoln County | 137 |
| 13. | Hancock County | 136 |
| 14. | York County | 129 |
| 15. | Cumberland County | 127 |
| 16. | Sagadahoc County | 123 |
