RANKING · 1990 CENSUS · 16 SHOWN OF 16

Most densely populated, Maine counties · 1990

Maine counties ranked by residents per square mile (1990). This list covers the 16 counties in Maine that qualify, ranked against each other statewide. The median across all 16 is 45.

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SAME RANKING BYCities States Metros

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

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS –

01Cumberland County, MEME317,222291–

02Androscoggin County, MEME116,487225–

03York County, MEME222,434166–

04Kennebec County, MEME129,067134–

05Sagadahoc County, MEME37,979132–

06Knox County, MEME41,11799–

07Lincoln County, MEME36,59567–

08Waldo County, MEME40,69345–

09Penobscot County, MEME157,96743–

10Hancock County, MEME57,17130–

11Oxford County, MEME60,34625–

12Franklin County, MEME30,82417–

13Washington County, MEME31,33414–

14Aroostook County, MEME66,60913–

15Somerset County, MEME51,62013–

16Piscataquis County, MEME17,4095–

SHOWING 1–16 OF 16

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