Maine Citizen Population By County in 2010 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2010, the citizen population for Maine was 1,307,845 and represented 98.51% of the total Maine population.

Among all Maine counties, Cumberland had the highest citizen population (272.31K), followed by York (195.29K), and Penobscot (150.97K).

In terms of percentages, Waldo had the highest percentage of its population being citizens (99.66%), followed by Oxford (99.40%), and Lincoln (99.27%).

The chart and table below shows the citizen population of each county and the percentage of each county's population that were citizens.

You can see similar information for other states and by state for the United States.

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Maine Citizen Population By County in 2010
Maine Citizen Population By County in 2010
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County Citizen Population % of County Population
Cumberland 272310 97.26
York 195285 98.90
Penobscot 150965 98.71
Kennebec 120605 98.92
Androscoggin 106045 98.30
Aroostook 71155 98.27
Oxford 57515 99.40
Hancock 53565 98.63
Somerset 51855 99.23
Knox 39740 99.08
Waldo 38610 99.66
Sagadahoc 35385 99.15
Lincoln 34465 99.27
Washington 32615 98.37
Franklin 30345 98.99
Piscataquis 17390 99.06