RANKING · 2020 CENSUS · 16 SHOWN OF 16

Fastest shrinking, Maine counties

Maine counties with the steepest population decline since the prior decennial census. This list covers the 16 counties in Maine that qualify, ranked against each other statewide.

Flip the list · Fastest growing, US counties →

MaineAll states All rankings

SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Most densely populated Most sparsely populated Best broadband access Worst broadband access

YEAR2000 2010 2020

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Aroostook County, MEME66,609-6.6%−56%

02Washington County, MEME31,334-5.4%+38%

03Franklin County, MEME30,824-4.3%−369%

04Piscataquis County, MEME17,409-4.2%−45%

05Somerset County, MEME51,620-3.4%−249%

06Penobscot County, MEME157,967-1.1%−2%

07Oxford County, MEME60,346-0.1%−102%

08Kennebec County, MEME129,067+1.2%+17%

09Hancock County, MEME57,171+1.9%−81%

10Waldo County, MEME40,693+2.1%−79%

11Knox County, MEME41,117+2.2%−76%

12Lincoln County, MEME36,595+2.3%−79%

13Androscoggin County, MEME116,487+3.2%−329%

14Sagadahoc County, MEME37,979+4.0%−20%

15York County, MEME222,434+7.5%−44%

16Cumberland County, MEME317,222+7.6%−18%

SHOWING 1–16 OF 16

Download CSV (full list, 16 rows)

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