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. | Village of Gainesville | Wyoming | 1.8 |
| 2. | Blodgett Mills Census Designated Place | Cortland | 3.9 |
| 3. | Elma Center Census Designated Place | Erie | 4.2 |
| 4. | Caroga Lake Census Designated Place | Fulton | 4.5 |
| 5. | Village of Heuvelton | St. Lawrence | 4.6 |
| 6. | Village of Kaser | Rockland | 4.8 |
| 7. | Colton Census Designated Place | St. Lawrence | 5.0 |
| 8. | Village of Cold Brook | Herkimer | 5.3 |
| 9. | Village of Boonville | Oneida | 5.3 |
| 10. | Village of Brushton | Franklin | 5.3 |
| 11. | Parishville Census Designated Place | St. Lawrence | 5.3 |
| 12. | Town Line Census Designated Place | Erie | 5.3 |
| 13. | Village of Constableville | Lewis | 5.5 |
| 14. | Village of Arkport | Steuben | 5.6 |
| 15. | Village of Lyons Falls | Lewis | 5.7 |
| 16. | North Boston Census Designated Place | Erie | 5.9 |
| 17. | Village of Odessa | Schuyler | 5.9 |
| 18. | Chautauqua Census Designated Place | Chautauqua | 5.9 |
| 19. | Au Sable Forks | Essex | 6.0 |
| 20. | Village of Poland | Herkimer | 6.0 |
