Massachusetts Gazetteer
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.
| County | Diversity Index | |
|---|---|---|
| 1. | Franklin County | 31.0 |
| 2. | Barnstable County | 31.9 |
| 3. | Berkshire County | 34.7 |
| 4. | Dukes County | 39.7 |
| 5. | Hampshire County | 44.9 |
| 6. | Plymouth County | 45.0 |
| 7. | Bristol County | 49.2 |
| 8. | Norfolk County | 53.2 |
| 9. | Worcester County | 58.4 |
| 10. | Middlesex County | 60.1 |
| 11. | Nantucket County | 62.5 |
| 12. | Essex County | 68.8 |
| 13. | Hampden County | 73.3 |
| 14. | Suffolk County | 81.7 |
