Data / Rankings / Population / Counties in Maine

Counties in Maine by population

Cumberland County had the highest population of 16 counties in 2022, at 309,532. Piscataquis County had the lowest, at 17,379. The median was 53,844 and the figure for Maine was 1.39 million. Source: the U.S. Census Bureau.

Highest309,532Cumberland County
Lowest17,379Piscataquis County
Median53,84416 counties
Maine1,391,585History

All counties, 2022

CSVChart (SVG)

Cumberland CountyCumberland County: 309,532 persons309,532York CountyYork County: 217,376 persons217,376Penobscot CountyPenobscot County: 154,948 persons154,948Kennebec CountyKennebec County: 127,182 persons127,182Androscoggin CountyAndroscoggin County: 113,437 persons113,437Aroostook CountyAroostook County: 67,295 persons67,295Oxford CountyOxford County: 59,534 persons59,534Hancock CountyHancock County: 56,636 persons56,636Somerset CountySomerset County: 51,052 persons51,052Knox CountyKnox County: 41,291 persons41,291Waldo CountyWaldo County: 40,196 persons40,196Sagadahoc CountySagadahoc County: 37,423 persons37,423Lincoln CountyLincoln County: 36,248 persons36,248Washington CountyWashington County: 31,482 persons31,482Franklin CountyFranklin County: 30,574 persons30,574Piscataquis CountyPiscataquis County: 17,379 persons17,379
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2022
persons		Change on 2021
1Cumberland County309,532+1.1%
2York County217,376+1.1%
3Penobscot County154,948+1%
4Kennebec County127,182+1.1%
5Androscoggin County113,437+0.6%
6Aroostook County67,295+0.3%
7Oxford County59,534+1.4%
8Hancock County56,636+0.5%
9Somerset County51,052+0.5%
10Knox County41,291+0.5%
11Waldo County40,196+0.5%
12Sagadahoc County37,423+0.7%
13Lincoln County36,248+0.6%
14Washington County31,482+0.9%
15Franklin County30,574+1.1%
16Piscataquis County17,379+0.9%

Other periods

About this ranking

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Maine by population using official data, and cite the source.
rank_places {"indicator":"population","level":"province","within":"Maine","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population&level=province&within=Maine&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest population?

Cumberland County, with 309,532 in 2022, according to the U.S. Census Bureau.

Which county has the lowest population?

Piscataquis County, with 17,379 in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). Retrieved 2026-10-08.

Population: other rankings

Counties in Maine: more rankings