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. | Howard County | 222 |
| 2. | Montgomery County | 205 |
| 3. | Calvert County | 199 |
| 4. | Anne Arundel County | 174 |
| 5. | Queen Anne's County | 166 |
| 6. | Frederick County | 160 |
| 7. | Talbot County | 157 |
| 8. | Carroll County | 155 |
| 9. | Charles County | 146 |
| 10. | Harford County | 141 |
| 11. | St. Mary's County | 138 |
| 12. | Baltimore County | 129 |
| 13. | Kent County | 126 |
| 14. | Prince George's County | 125 |
| 15. | Worcester County | 112 |
| 16. | Cecil County | 95 |
| 17. | Washington County | 86 |
| 18. | Garrett County | 83 |
| 19. | Caroline County | 81 |
| 20. | Dorchester County | 73 |
