Ranking of Maine Counties By Population in 2021
Updated on June 18, 2025.
Based on the US Census Vintage data estimates, in 2021, the Population for Maine was 1.38M. Among all Maine counties, Cumberland County had the highest population (306.15K), followed by York County (215.05K), and Penobscot County (153.38K).
The chart below shows the top 10 counties, and the table below shows the ranking of all Maine counties.
You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.
Related Topics: Maine Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage), 2021 Census.
See this for other years:
Ranking of Maine Counties By Population in 2021
Items per page:
25
0 of 0
| Rank | County | Population |
|---|---|---|
| 1 | Cumberland County | 306152 |
| 2 | York County | 215050 |
| 3 | Penobscot County | 153383 |
| 4 | Kennebec County | 125775 |
| 5 | Androscoggin County | 112733 |
| 6 | Aroostook County | 67062 |
| 7 | Oxford County | 58690 |
| 8 | Hancock County | 56362 |
| 9 | Somerset County | 50788 |
| 10 | Knox County | 41078 |
| 11 | Waldo County | 39974 |
| 12 | Sagadahoc County | 37171 |
| 13 | Lincoln County | 36024 |
| 14 | Washington County | 31213 |
| 15 | Franklin County | 30265 |
| 16 | Piscataquis County | 17211 |