RANKING · 2025 ESTIMATES · 16 SHOWN OF 16

Fastest shrinking, Maine counties

Maine counties with the steepest population decline from the 2020 census to 2025. 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, MEME66,609-0.7%+14.2 pts

02Washington County, MEME31,334+0.8%+4.6 pts

03Knox County, MEME41,117+1.3%−7.9 pts

04Somerset County, MEME51,620+2.3%+0.0 pts

05Waldo County, MEME40,693+2.7%−7.1 pts

06Hancock County, MEME57,171+3.1%−7.3 pts

07Sagadahoc County, MEME37,979+3.5%−1.5 pts

08Piscataquis County, MEME17,409+3.6%+11.2 pts

09Penobscot County, MEME157,967+3.8%+4.9 pts

10Lincoln County, MEME36,595+3.9%−6.9 pts

11Kennebec County, MEME129,067+4.4%+3.3 pts

12Oxford County, MEME60,346+4.4%+0.4 pts

13Franklin County, MEME30,824+4.6%+3.1 pts

14Cumberland County, MEME317,222+4.7%−4.6 pts

15Androscoggin County, MEME116,487+4.8%+6.2 pts

16York County, MEME222,434+4.9%−8.5 pts

SHOWING 1–16 OF 16

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU POPULATION ESTIMATES