The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
| Name | County | Diversity Index | |
|---|---|---|---|
| 1. | City of Providence | Providence | 89.1 |
| 2. | City of Central Falls | Providence | 86.5 |
| 3. | City of Pawtucket | Providence | 77.4 |
| 4. | Melville Census Designated Place | Newport | 67.1 |
| 5. | City of Woonsocket | Providence | 67.1 |
| 6. | City of Cranston | Providence | 58.7 |
| 7. | City of Newport | Newport | 51.2 |
| 8. | City of East Providence | Providence | 46.4 |
| 9. | Kingston Census Designated Place | Washington | 44.4 |
| 10. | Valley Falls Census Designated Place | Providence | 40.7 |
| 11. | Newport East Census Designated Place | Newport | 40.6 |
| 12. | City of Warwick | Kent | 30.1 |
| 13. | Westerly Census Designated Place | Washington | 25.8 |
| 14. | Cumberland Hill Census Designated Place | Providence | 25.6 |
| 15. | Bradford Census Designated Place | Washington | 20.1 |
| 16. | Pascoag Census Designated Place | Providence | 20.0 |
| 17. | Ashaway Census Designated Place | Washington | 19.2 |
| 18. | Carolina Census Designated Place | Washington | 18.3 |
| 19. | Clayville Census Designated Place | Providence | 17.4 |
| 20. | Narragansett Pier Census Designated Place | Washington | 15.8 |
