RANKING · 2024 ACS · 16 SHOWN OF 16

Youngest by median age, Maine counties

Maine counties with the youngest median age (2024 ACS). This list covers the 16 counties in Maine that qualify, ranked against each other statewide. The median across all 16 is 47.4.

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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

01Androscoggin County, MEME116,48740.5+9%

02▲1Cumberland County, MEME317,22242.2+12%

03▼1Penobscot 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%

08▲1Sagadahoc County, MEME37,97947.3+24%

09▼1Waldo 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%

15▲1Lincoln County, MEME36,59551.4+21%

16▼1Piscataquis County, MEME17,40951.5+22%

SHOWING 1–16 OF 16

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES