RANKING · 1990 CENSUS · 16 SHOWN OF 16

Oldest by median age, Maine counties · 1990

Maine counties ranked by median age of residents (1990 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 –

01Lincoln County, MEME36,59537.3–

02Knox County, MEME41,11737.0–

03Hancock County, MEME57,17135.8–

04Washington County, MEME31,33435.7–

05Piscataquis County, MEME17,40935.4–

06Oxford County, MEME60,34635.0–

07Waldo County, MEME40,69334.7–

08Kennebec County, MEME129,06734.2–

09Somerset County, MEME51,62033.8–

10York County, MEME222,43433.7–

11Cumberland County, MEME317,22233.7–

12Aroostook County, MEME66,60933.2–

13Franklin County, MEME30,82432.9–

14Androscoggin County, MEME116,48732.9–

15Sagadahoc County, MEME37,97932.7–

16Penobscot County, MEME157,96732.6–

SHOWING 1–16 OF 16

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