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 Vermillion | Clay | 100 |
| 2. | City of Sturgis | Meade | 123 |
| 3. | City of Spearfish | Lawrence | 124 |
| 4. | City of Veblen | Marshall | 124 |
| 5. | Town of Hermosa | Custer | 126 |
| 6. | Town of Keystone | Pennington | 127 |
| 7. | Town of Buffalo Gap | Custer | 130 |
| 8. | City of Custer | Custer | 139 |
| 9. | Marty Census Designated Place | Charles Mix | 140 |
| 10. | City of Hill City | Pennington | 140 |
| 11. | Town of Nisland | Butte | 140 |
| 12. | Green Valley Census Designated Place | Pennington | 141 |
| 13. | City of Rapid City | Pennington | 142 |
| 14. | Shindler Census Designated Place | Lincoln | 148 |
| 15. | Lake Madison Census Designated Place | Lake | 149 |
| 16. | City of Brookings | Brookings | 149 |
| 17. | Town of Pringle | Custer | 155 |
| 18. | Village of Wentworth | Lake | 155 |
| 19. | City of Sioux Falls | Minnehaha | 156 |
| 20. | Saint Onge Census Designated Place | Lawrence | 158 |
