Most racially diverse, US cities · 1990
US cities ranked by the CensusEasy Diversity Score (0 to 100), the chance two random residents are of a different race or ethnicity (1990 ACS). Carson, California leads at 94. 6,058 cities qualify in total. Cities with fewer than 5,000 residents are excluded. California carries 20 of the top 25 entries. The median across all 6,058 is 22.
Flip the list · Least racially diverse, US cities →UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS
Frequently asked
Which city has the highest diversity score?
Carson, California ranks #1 with 94 (1990 Decennial Census).
What are the top 5 cities by diversity score?
Carson, California, Gardena, California, San Pablo, California, Hawthorne, California, Jersey City, New Jersey.
How many cities are in this ranking?
6,058 cities qualify after filtering for population minimums and data availability (minimum 5,000 residents). The ranking covers 1990 Decennial Census data.
How is diversity score measured?
CensusEasy Diversity Score (0 to 100): the chance that two random residents are of a different race or ethnicity, rescaled so 100 is a perfectly even split across all five groups. A Simpson diversity index over the five ACS race and ethnicity shares. Source: US Census Bureau, 1990 Decennial Census.