RANKING · 2010 CENSUS · 16 SHOWN OF 16

Oldest by median age, Maine counties · 2010

Maine counties ranked by median age of residents (2010 ACS). This list covers the 16 counties in Maine that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Lincoln County, MEME36,59548.1+13%

02Piscataquis County, MEME17,40948.1+14%

03Hancock County, MEME57,17146.3+14%

04Knox County, MEME41,11746.2+12%

05Washington County, MEME31,33446.1+14%

06Aroostook County, MEME66,60945.3+11%

07Oxford County, MEME60,34644.6+11%

08Sagadahoc County, MEME37,97944.1+16%

09Waldo County, MEME40,69344.1+12%

10Somerset County, MEME51,62043.6+12%

11Franklin County, MEME30,82443.4+14%

12York County, MEME222,43443.0+12%

13Kennebec County, MEME129,06742.8+11%

14Cumberland County, MEME317,22241.0+9%

15Penobscot County, MEME157,96739.9+7%

16Androscoggin County, MEME116,48739.8+7%

SHOWING 1–16 OF 16

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS