# Counties in Maine by population, 2025

All 16 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `population`
- Unit: persons
- Definition: 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.
- Source: 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
- Citation: 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.
- Web page: https://invokely.ai/rankings/population/maine-counties
- CSV: https://invokely.ai/download/rankings/population/maine-counties.csv

| Rank | Place | persons |
|---:|---|---:|
| 1 | Cumberland County | 317,222 |
| 2 | York County | 222,434 |
| 3 | Penobscot County | 157,967 |
| 4 | Kennebec County | 129,067 |
| 5 | Androscoggin County | 116,487 |
| 6 | Aroostook County | 66,609 |
| 7 | Oxford County | 60,346 |
| 8 | Hancock County | 57,171 |
| 9 | Somerset County | 51,620 |
| 10 | Knox County | 41,117 |
| 11 | Waldo County | 40,693 |
| 12 | Sagadahoc County | 37,979 |
| 13 | Lincoln County | 36,595 |
| 14 | Washington County | 31,334 |
| 15 | Franklin County | 30,824 |
| 16 | Piscataquis County | 17,409 |