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. | Marlboro County | 33 |
| 2. | Allendale County | 36 |
| 3. | Bamberg County | 38 |
| 4. | Lee County | 39 |
| 5. | Marion County | 39 |
| 6. | Hampton County | 40 |
| 7. | Dillon County | 40 |
| 8. | Williamsburg County | 42 |
| 9. | Union County | 45 |
| 10. | Barnwell County | 46 |
| 11. | Chesterfield County | 47 |
| 12. | Cherokee County | 49 |
| 13. | Chester County | 50 |
| 14. | Orangeburg County | 51 |
| 15. | Clarendon County | 58 |
| 16. | Laurens County | 59 |
| 17. | Saluda County | 60 |
| 18. | Colleton County | 61 |
| 19. | Darlington County | 61 |
| 20. | Abbeville County | 62 |