RANKING · 1990 CENSUS · 16 SHOWN OF 16

Least racially diverse, Maine counties · 1990

Maine counties with the lowest CensusEasy Diversity Score, where most residents share the same race or ethnicity (2023 ACS). This list covers the 16 counties in Maine that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPDIVERSITY SCOREVS 2000

01Knox County, MEME41,1172−13%

02Oxford County, MEME60,3462−7%

03Somerset County, MEME51,6203+4%

04Piscataquis County, MEME17,4093+18%

05Waldo County, MEME40,6933+26%

06Franklin County, MEME30,8243+2%

07Lincoln County, MEME36,5954+55%

08Hancock County, MEME57,1714+29%

09Kennebec County, MEME129,0674+1%

10Androscoggin County, MEME116,4874−16%

11York County, MEME222,4345+12%

12Penobscot County, MEME157,9677+46%

13Cumberland County, MEME317,2227−19%

14Sagadahoc County, MEME37,9798+21%

15Aroostook County, MEME66,6098+125%

16Washington County, MEME31,33412+241%

SHOWING 1–16 OF 16

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES