The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
| Name | County | Wealth Index | |
|---|---|---|---|
| 1. | Finley Point Census Designated Place | Lake | 249 |
| 2. | Gibson Flats Census Designated Place | Cascade | 194 |
| 3. | Rollins Census Designated Place | Lake | 184 |
| 4. | Sedan Census Designated Place | Gallatin | 182 |
| 5. | Bear Dance Census Designated Place | Lake | 171 |
| 6. | Springhill Census Designated Place | Gallatin | 158 |
| 7. | Montana City Census Designated Place | Jefferson | 154 |
| 8. | Kerr Census Designated Place | Lake | 153 |
| 9. | South Hills Census Designated Place | Jefferson | 144 |
| 10. | Condon Census Designated Place | Missoula | 144 |
| 11. | Four Corners Census Designated Place | Gallatin | 142 |
| 12. | Gallatin Gateway Census Designated Place | Gallatin | 138 |
| 13. | Town of Plevna | Fallon | 138 |
| 14. | Somers Census Designated Place | Flathead | 132 |
| 15. | Wye Census Designated Place | Missoula | 132 |
| 16. | Turtle Lake Census Designated Place | Lake | 128 |
| 17. | Clancy Census Designated Place | Jefferson | 128 |
| 18. | Swan Lake Census Designated Place | Lake | 127 |
| 19. | Jette Census Designated Place | Lake | 127 |
| 20. | Olney Census Designated Place | Flathead | 126 |
