The Diversity Index (DI) gives us a statistical sense of the racial/ethnic mix of a county. For example, Beaver County’s DI is 26.1%, meaning that there is better than a 1 in 4 chance that any two people in Beaver County will be of a different race or ethnicity. Allegheny’s DI is 41.6%, meaning that there is almost a 50% chance that any two people will be of a different race or ethnicity. Over the past decade, Beaver County and all its surrounding counties have become more diverse. Here is a listing from the most to least diverse:
Allegheny County = 41.6% (↑8.4%)
Beaver County = 26.1% (↑8.3%)
Lawrence County = 21.9% (diversity index ↑8.9%, greatest gain in diversity)
Washington County = 20.0% (↑7.4%)
Hancock County, WV = 18% (↑8%)
Columbiana County, OH = 16% (↑6%)
Butler County = 15.4% (↑7.3%)
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