RANKING · 2010 CENSUS · 16 SHOWN OF 16

Youngest by median age, Maine counties · 2010

Maine counties with the youngest median age (2023 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

RELATEDOldest by median age Most foreign-born residents Highest uninsured rate Most women Most men Highest disability rate

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Androscoggin County, MEME116,48739.8+7%

02Penobscot County, MEME157,96739.9+7%

03Cumberland County, MEME317,22241.0+9%

04Kennebec County, MEME129,06742.8+11%

05York County, MEME222,43443.0+12%

06Franklin County, MEME30,82443.4+14%

07Somerset County, MEME51,62043.6+12%

08Sagadahoc County, MEME37,97944.1+16%

09Waldo County, MEME40,69344.1+12%

10Oxford County, MEME60,34644.6+11%

11Aroostook County, MEME66,60945.3+11%

12Washington County, MEME31,33446.1+14%

13Knox County, MEME41,11746.2+12%

14Hancock County, MEME57,17146.3+14%

15Lincoln County, MEME36,59548.1+13%

16Piscataquis County, MEME17,40948.1+14%

SHOWING 1–16 OF 16

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES