Data / Rankings / Population density / Counties in Maine

Counties in Maine by population density

Cumberland County had the highest population density of 16 counties in 2022, at 142.9 inhabitants per km². Piscataquis County had the lowest, at 1.7 inhabitants per km². The median was 19.4 inhabitants per km² and the figure for Maine was 17.4 inhabitants per km². Source: the U.S. Census Bureau.

Highest142.9Cumberland County
Lowest1.7Piscataquis County
Median19.416 counties
Maine17.4History

All counties, 2022

CSVChart (SVG)

Cumberland CountyCumberland County: 142.9 inhabitants per km²142.9Androscoggin CountyAndroscoggin County: 93.6 inhabitants per km²93.6York CountyYork County: 84.7 inhabitants per km²84.7Sagadahoc CountySagadahoc County: 56.9 inhabitants per km²56.9Kennebec CountyKennebec County: 56.6 inhabitants per km²56.6Knox CountyKnox County: 43.7 inhabitants per km²43.7Lincoln CountyLincoln County: 30.7 inhabitants per km²30.7Waldo CountyWaldo County: 21.3 inhabitants per km²21.3Penobscot CountyPenobscot County: 17.6 inhabitants per km²17.6Hancock CountyHancock County: 13.8 inhabitants per km²13.8Oxford CountyOxford County: 11.1 inhabitants per km²11.1Franklin CountyFranklin County: 7 inhabitants per km²7Somerset CountySomerset County: 5 inhabitants per km²5Washington CountyWashington County: 4.7 inhabitants per km²4.7Aroostook CountyAroostook County: 3.9 inhabitants per km²3.9Piscataquis CountyPiscataquis County: 1.7 inhabitants per km²1.7
inhabitants per km². Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2022
inhabitants per km²		Change on 2021
1Cumberland County142.9+1.1%
2Androscoggin County93.6+0.6%
3York County84.7+1.1%
4Sagadahoc County56.9+0.7%
5Kennebec County56.6+1.1%
6Knox County43.7+0.5%
7Lincoln County30.7+0.6%
8Waldo County21.3+0.5%
9Penobscot County17.6+1%
10Hancock County13.8+0.5%
11Oxford County11.1+1.4%
12Franklin County7+1%
13Somerset County5+0.5%
14Washington County4.7+0.9%
15Aroostook County3.9+0.3%
16Piscataquis County1.7+0.9%

Other periods

About this ranking

Resident population divided by land area in km². World Bank figures use mid-year population and land area excluding inland water.

United States: Census Bureau population estimates for 1 July divided by land area (water excluded) from the latest Census Gazetteer files. US tables often give people per square mile; multiply persons per km² by 2.59 to compare.

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. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-09.

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Questions

Which county has the highest population density?

Cumberland County, with 142.9 inhabitants per km² in 2022, according to the U.S. Census Bureau.

Which county has the lowest population density?

Piscataquis County, with 1.7 inhabitants per km² 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, Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². Retrieved 2026-10-09.

Population density: other rankings

Counties in Maine: more rankings