RANKING · 1990 CENSUS · 16 SHOWN OF 16

Oldest housing stock, Maine counties · 1990

Maine counties ranked by oldest median year of construction (1990 ACS). This list covers the 16 counties in Maine that qualify, ranked against each other statewide. The median across all 16 is 1961.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS –

01Knox County, MEME41,1171950–

02Androscoggin County, MEME116,4871954–

03Aroostook County, MEME66,6091957–

04Cumberland County, MEME317,2221958–

05Lincoln County, MEME36,5951959–

06Oxford County, MEME60,3461960–

07Washington County, MEME31,3341960–

08Penobscot County, MEME157,9671961–

09Piscataquis County, MEME17,4091961–

10Sagadahoc County, MEME37,9791961–

11Somerset County, MEME51,6201961–

12Kennebec County, MEME129,0671962–

13Hancock County, MEME57,1711964–

14Waldo County, MEME40,6931964–

15Franklin County, MEME30,8241965–

16York County, MEME222,4341966–

SHOWING 1–16 OF 16

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS