RANKING · 2000 CENSUS · 16 SHOWN OF 16

Oldest by median age, Maine counties · 2000

Maine counties ranked by median age of residents (2000 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 1990

01Lincoln County, MEME36,59542.6+14%

02Piscataquis County, MEME17,40942.1+19%

03Knox County, MEME41,11741.4+12%

04Aroostook County, MEME66,60940.7+23%

05Hancock County, MEME57,17140.7+14%

06Washington County, MEME31,33440.5+14%

07Oxford County, MEME60,34640.2+15%

08Waldo County, MEME40,69339.3+13%

09Somerset County, MEME51,62038.9+15%

10Kennebec County, MEME129,06738.7+13%

11York County, MEME222,43438.5+14%

12Franklin County, MEME30,82438.2+16%

13Sagadahoc County, MEME37,97938.0+16%

14Cumberland County, MEME317,22237.6+12%

15Androscoggin County, MEME116,48737.2+13%

16Penobscot County, MEME157,96737.2+14%

SHOWING 1–16 OF 16

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