RANKING · 1990 CENSUS · 77 SHOWN OF 77
Least racially diverse, Oklahoma counties · 1990
Oklahoma counties with the lowest CensusEasy Diversity Score, where most residents share the same race or ethnicity (1990 ACS). This list covers the 77 counties in Oklahoma that qualify, ranked against each other statewide. The median across all 77 is 34.
Flip the list · Most racially diverse, US counties →Least racially diverse by state
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RANKPLACESTATEPOPDIVERSITY SCOREVS –
SHOWING 1–77 OF 77
UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS