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Population Review

Census ACS 2023 · 16 counties

Largest Counties in Maine

Maine has 16 counties with Census data available. The largest is Cumberland County with a population of 305,940. County-level data is important because counties are the primary unit of local government in most states, responsible for courts, elections, public health, and infrastructure. Population distribution across counties reveals where growth is concentrated and where rural decline may be occurring.

Source: Census ACS 2023 5-Year Estimates

#CountyPopulationMedian Income
1York County214,731$82,904
2Washington County31,261$52,237
3Waldo County40,006$68,441
4Somerset County50,852$56,199
5Sagadahoc County37,093$82,080
6Piscataquis County17,125$55,234
7Penobscot County153,571$63,248
8Oxford County58,728$57,933
9Lincoln County35,840$72,026
10Knox County40,860$71,903
11Kennebec County125,614$65,062
12Hancock County56,084$69,630
13Franklin County30,145$58,522
14Cumberland County305,940$92,983
15Aroostook County67,227$54,254
16Androscoggin County112,323$67,298

More Rankings for Maine

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Frequently Asked Questions

Cumberland County is the #1 ranked county in Maine by population, with a value of 305,940 according to Census ACS 2023 data.

Maine has 16 counties tracked in Census ACS 2023 data.

All data comes from the American Community Survey (ACS) 2023 5-Year estimates by the US Census Bureau.

Sources: US Census Bureau ACS 2023 5-Year Estimates

Data from the American Community Survey 2023 5-Year estimates. Covers all counties in Maine.