RANKING · 2025 ESTIMATES · 16 SHOWN OF 16

Most sparsely populated, Maine counties

Maine counties with the fewest residents per square mile (2025). This list covers the 16 counties in Maine that qualify, ranked against each other statewide. The median across all 16 is 56.

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SAME RANKING BYCities States Metros

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

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS 2000

01Piscataquis County, MEME17,4094+1%

02Aroostook County, MEME66,60910−10%

03Washington County, MEME31,33412−8%

04Somerset County, MEME51,62013+1%

05Franklin County, MEME30,82418+5%

06Oxford County, MEME60,34629+10%

07Hancock County, MEME57,17136+10%

08Penobscot County, MEME157,96746+9%

09Waldo County, MEME40,69356+12%

10Lincoln County, MEME36,59580+9%

11Knox County, MEME41,117113+4%

12Kennebec County, MEME129,067149+10%

13Sagadahoc County, MEME37,979150+8%

14York County, MEME222,434224+19%

15Androscoggin County, MEME116,487249+12%

16Cumberland County, MEME317,222379+19%

SHOWING 1–16 OF 16

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES