Maine Population By County in 2018
Updated on December 2, 2021.

According to the US Census Bureau population estimates, there were 1,340,123 people living in Maine in 2018. Cumberland County was the most populated county with 294,363 residents, followed by York County with 206,041 residents, and Penobscot County with 151,798 residents. Piscataquis County with a population of 16,714 was the least populated county in Maine in 2018.

Use the map below to interactively explore the population of each county in Maine in 2018. The data can also be explored further by sorting and filtering with the table below.

Hover/Click on the counties to see the values.
Maine Population By County (2018)
See also Population estimate for other years:
Table of Maine Population By County in 2018
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County Population % of State Population
Androscoggin 107,987 8.06%
Aroostook 67,302 5.02%
Cumberland 294,363 21.97%
Franklin 29,831 2.23%
Hancock 54,849 4.09%
Kennebec 122,086 9.11%
Knox 39,760 2.97%
Lincoln 34,396 2.57%
Oxford 57,777 4.31%
Penobscot 151,798 11.33%
Piscataquis 16,714 1.25%
Sagadahoc 35,821 2.67%
Somerset 50,568 3.77%
Waldo 39,678 2.96%
Washington 31,152 2.33%
York 206,041 15.38%