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.
| County | Wealth Index | |
|---|---|---|
| 1. | Ada County | 101 |
| 2. | Blaine County | 101 |
| 3. | Camas County | 93 |
| 4. | Bonneville County | 90 |
| 5. | Kootenai County | 84 |
| 6. | Bonner County | 82 |
| 7. | Valley County | 81 |
| 8. | Butte County | 76 |
| 9. | Bear Lake County | 75 |
| 10. | Caribou County | 74 |
| 11. | Teton County | 74 |
| 12. | Twin Falls County | 70 |
| 13. | Boise County | 70 |
| 14. | Bingham County | 67 |
| 15. | Boundary County | 67 |
| 16. | Clearwater County | 67 |
| 17. | Bannock County | 66 |
| 18. | Fremont County | 65 |
| 19. | Jefferson County | 63 |
| 20. | Adams County | 63 |
