RANKING · 2020 CENSUS · 16 SHOWN OF 16

Most foreign-born residents, Maine counties · 2020

Maine counties ranked by the share of residents born outside the US (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 Youngest by median age Highest uninsured rate Most women Most men Highest disability rate

YEAR2010 2020 2024

RANKPLACESTATEPOPFOREIGN-BORNVS 2000

01Cumberland County, MEME317,2226.0%–

02Aroostook County, MEME66,6094.0%–

03Washington County, MEME31,3343.7%–

04Androscoggin County, MEME116,4873.5%–

05York County, MEME222,4343.5%–

06Sagadahoc County, MEME37,9793.5%–

07Hancock County, MEME57,1713.3%–

08Penobscot County, MEME157,9672.9%–

09Knox County, MEME41,1172.6%–

10Lincoln County, MEME36,5952.4%–

11Kennebec County, MEME129,0672.3%–

12Waldo County, MEME40,6932.1%–

13Piscataquis County, MEME17,4092.1%–

14Franklin County, MEME30,8241.8%–

15Somerset County, MEME51,6201.7%–

16Oxford County, MEME60,3461.6%–

SHOWING 1–16 OF 16

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