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. | Kenedy County | 29 |
| 2. | Hudspeth County | 34 |
| 3. | Presidio County | 34 |
| 4. | Starr County | 34 |
| 5. | Zavala County | 34 |
| 6. | Brooks County | 35 |
| 7. | Zapata County | 36 |
| 8. | Willacy County | 43 |
| 9. | Cottle County | 43 |
| 10. | Culberson County | 44 |
| 11. | Maverick County | 45 |
| 12. | Red River County | 46 |
| 13. | Houston County | 46 |
| 14. | Kinney County | 46 |
| 15. | Hall County | 46 |
| 16. | Hidalgo County | 48 |
| 17. | Castro County | 48 |
| 18. | Crosby County | 49 |
| 19. | Duval County | 49 |
| 20. | Cameron County | 49 |
