Maine Counties by Population (2025)
by Kristen Carney 
Updated: August 7, 2025
The most populous counties in Maine are Cumberland County with 313,809, York County at 220,143, Penobscot County with 156,840, Kennebec County at 128,461, and Androscoggin County with 115,272. You can get the most current Census population data for all 16 Maine counties, sorted from the most populous counties in Maine to the least, according to the 2024 Population Estimates Program.
Sure, you can copy this list right into your favorite spreadsheet tool. Or save yourself formatting headaches and grab the latest Maine counties population data as a ready-to-use Excel™ file below. It's time to stop searching and start digging into data!
| Rank | County | Population |
|---|---|---|
| 1 | Cumberland County | 313,809 |
| 2 | York County | 220,143 |
| 3 | Penobscot County | 156,840 |
| 4 | Kennebec County | 128,461 |
| 5 | Androscoggin County | 115,272 |
| 6 | Aroostook County | 66,776 |
| 7 | Oxford County | 60,039 |
| 8 | Hancock County | 56,946 |
| 9 | Somerset County | 51,338 |
| 10 | Knox County | 40,981 |
| 11 | Waldo County | 40,617 |
| 12 | Sagadahoc County | 37,582 |
| 13 | Lincoln County | 36,491 |
| 14 | Washington County | 31,383 |
| 15 | Franklin County | 30,902 |
| 16 | Piscataquis County | 17,432 |
|
United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2024. Population Division. May 2025. |
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