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. | Borough of Avalon | Cape May | 8.2 |
| 2. | Diamond Beach Census Designated Place | Cape May | 9.9 |
| 3. | Hutchinson Census Designated Place | Warren | 10.8 |
| 4. | Borough of Cape May Point | Cape May | 11.7 |
| 5. | Dover Beaches North Census Designated Place | Ocean | 12.2 |
| 6. | Borough of Harvey Cedars | Ocean | 12.3 |
| 7. | Borough of Stone Harbor | Cape May | 12.5 |
| 8. | Strathmere Census Designated Place | Cape May | 12.8 |
| 9. | City of Sea Isle City | Cape May | 14.4 |
| 10. | Borough of Longport | Atlantic | 14.7 |
| 11. | Borough of Sea Girt | Monmouth | 14.8 |
| 12. | Borough of Stockton | Hunterdon | 15.2 |
| 13. | Borough of Surf City | Ocean | 15.7 |
| 14. | Holiday Heights Census Designated Place | Ocean | 16.3 |
| 15. | Harmony Census Designated Place | Warren | 16.4 |
| 16. | Borough of Barnegat Light | Ocean | 17.1 |
| 17. | Village of Loch Arbour | Monmouth | 17.2 |
| 18. | Borough of Interlaken | Monmouth | 17.2 |
| 19. | North Beach Haven Census Designated Place | Ocean | 17.2 |
| 20. | Borough of Spring Lake | Monmouth | 17.9 |