RANKING · 2000 CENSUS · 16 SHOWN OF 16

Most population gained, Maine counties · 2000

Maine counties that added the most residents from the 1990 census to 2000, by raw count of people rather than percentage. This list covers the 16 counties in Maine that qualify, ranked against each other statewide. The median across all 16 is +1,679.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Fastest shrinking Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS –

01Cumberland County, MEME317,222+22,477–

02York County, MEME222,434+22,155–

03Hancock County, MEME57,171+4,843–

04Knox County, MEME41,117+3,308–

05Waldo County, MEME40,693+3,262–

06Lincoln County, MEME36,595+3,259–

07Oxford County, MEME60,346+2,153–

08Sagadahoc County, MEME37,979+1,679–

09Kennebec County, MEME129,067+1,210–

10Somerset County, MEME51,620+1,121–

11Franklin County, MEME30,824+459–

12Washington County, MEME31,334-1,367–

13Piscataquis County, MEME17,409-1,418–

14Androscoggin County, MEME116,487-1,466–

15Penobscot County, MEME157,967-1,682–

16Aroostook County, MEME66,609-12,998–

SHOWING 1–16 OF 16

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS