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.
| Name | County | Housing Affordability Index | |
|---|---|---|---|
| 1. | City of Colstrip | Rosebud | 350 |
| 2. | Crow Agency Census Designated Place | Big Horn | 350 |
| 3. | Town of Richey | Dawson | 350 |
| 4. | Rocky Boy's Agency Census Designated Place | Hill | 350 |
| 5. | Rudyard Census Designated Place | Hill | 350 |
| 6. | Lame Deer Census Designated Place | Rosebud | 348 |
| 7. | Town of Nashua | Valley | 334 |
| 8. | Fort Smith Census Designated Place | Big Horn | 324 |
| 9. | Hays Census Designated Place | Blaine | 324 |
| 10. | Town of Sunburst | Toole | 318 |
| 11. | Town of Westby | Sheridan | 308 |
| 12. | Hinsdale Census Designated Place | Valley | 304 |
| 13. | Town of Saco | Phillips | 298 |
| 14. | Muddy Census Designated Place | Big Horn | 291 |
| 15. | Lewistown Heights Census Designated Place | Fergus | 285 |
| 16. | Busby Census Designated Place | Big Horn | 284 |
| 17. | Ashland Census Designated Place | Rosebud | 279 |
| 18. | Heart Butte Census Designated Place | Pondera | 277 |
| 19. | Town of Ekalaka | Carter | 275 |
| 20. | Fallon Census Designated Place | Prairie | 268 |
