RANKING · 2024 ACS · 16 SHOWN OF 16

Youngest by median age, Maine counties

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, MEME116,48740.5+9%

02Cumberland County, MEME317,22242.2+12%

03Penobscot County, MEME157,96742.5+14%

04Kennebec County, MEME129,06743.7+13%

05York County, MEME222,43445.3+18%

06Franklin County, MEME30,82446.1+21%

07Somerset County, MEME51,62047.0+21%

08Sagadahoc County, MEME37,97947.3+24%

09Waldo County, MEME40,69347.4+21%

10Oxford County, MEME60,34648.2+20%

11Aroostook County, MEME66,60948.3+19%

12Washington County, MEME31,33448.6+20%

13Hancock County, MEME57,17149.0+20%

14Knox County, MEME41,11749.5+20%

15Lincoln County, MEME36,59551.4+21%

16Piscataquis County, MEME17,40951.5+22%

SHOWING 1–16 OF 16

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