RANKING · 2020 CENSUS · 16 SHOWN OF 16

Fastest shrinking, Maine counties · 2020

Maine counties with the steepest population decline from the 2010 census to 2020. This list covers the 16 counties in Maine that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

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

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Aroostook County, MEME66,609-6.6%+8.3 pts

02Washington County, MEME31,334-5.4%−1.5 pts

03Franklin County, MEME30,824-4.3%−5.8 pts

04Piscataquis County, MEME17,409-4.2%+3.4 pts

05Somerset County, MEME51,620-3.4%−5.6 pts

06Penobscot County, MEME157,967-1.1%+0.0 pts

07Oxford County, MEME60,346-0.1%−4.2 pts

08Kennebec County, MEME129,067+1.2%+0.2 pts

09Hancock County, MEME57,171+1.9%−8.4 pts

10Waldo County, MEME40,693+2.1%−7.8 pts

11Knox County, MEME41,117+2.2%−6.9 pts

12Lincoln County, MEME36,595+2.3%−8.5 pts

13Androscoggin County, MEME116,487+3.2%+4.6 pts

14Sagadahoc County, MEME37,979+4.0%−1.0 pts

15York County, MEME222,434+7.5%−5.9 pts

16Cumberland County, MEME317,222+7.6%−1.6 pts

SHOWING 1–16 OF 16

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS