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. | Chilton Census Designated Place | Falls | 90.9 |
| 2. | Mission Bend Census Designated Place | Fort Bend | 88.6 |
| 3. | Fifth Street Census Designated Place | Fort Bend | 88.3 |
| 4. | City of Wilmer | Dallas | 86.5 |
| 5. | City of Irving | Dallas | 86.3 |
| 6. | City of Hempstead | Waller | 86.2 |
| 7. | City of Brookshire | Waller | 86.2 |
| 8. | City of Balch Springs | Dallas | 86.2 |
| 9. | City of Grand Prairie | Dallas | 86.1 |
| 10. | City of Port Arthur | Jefferson | 85.7 |
| 11. | Town of Coolidge | Limestone | 85.4 |
| 12. | Stowell Census Designated Place | Chambers | 85.3 |
| 13. | City of Stafford | Fort Bend | 85.2 |
| 14. | City of Bellmead | McLennan | 85.2 |
| 15. | City of Houston | Harris | 85.2 |
| 16. | City of Manor | Travis | 85.0 |
| 17. | City of Dallas | Dallas | 85.0 |
| 18. | City of Everman | Tarrant | 84.9 |
| 19. | City of Humble | Harris | 84.8 |
| 20. | City of Cactus | Moore | 84.6 |
