RANKING · 1990 CENSUS · 16 SHOWN OF 16

Youngest by median age, Maine counties · 1990

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

01Penobscot County, MEME157,96732.6−12%

02Sagadahoc County, MEME37,97932.7−14%

03Androscoggin County, MEME116,48732.9−12%

04Franklin County, MEME30,82432.9−14%

05Aroostook County, MEME66,60933.2−18%

06Cumberland County, MEME317,22233.7−10%

07York County, MEME222,43433.7−12%

08Somerset County, MEME51,62033.8−13%

09Kennebec County, MEME129,06734.2−12%

10Waldo County, MEME40,69334.7−12%

11Oxford County, MEME60,34635.0−13%

12Piscataquis County, MEME17,40935.4−16%

13Washington County, MEME31,33435.7−12%

14Hancock County, MEME57,17135.8−12%

15Knox County, MEME41,11737.0−11%

16Lincoln County, MEME36,59537.3−12%

SHOWING 1–16 OF 16

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