Maine Citizen Population By County in 2017 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2017, the citizen population for Maine was 1,309,200 and represented 98.42% of the total Maine population.

Among all Maine counties, Cumberland had the highest citizen population (281.39K), followed by York (199.11K), and Penobscot (150.13K).

In terms of percentages, Sagadahoc had the highest percentage of its population being citizens (99.28%), followed by Franklin (99.27%), and Somerset (99.16%).

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 2017
Maine Citizen Population By County in 2017
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County Citizen Population % of County Population
Cumberland 281385 97.31
York 199105 98.83
Penobscot 150125 98.58
Kennebec 119845 98.81
Androscoggin 105865 98.65
Aroostook 67685 98.32
Oxford 56650 98.99
Hancock 53510 98.24
Somerset 50565 99.16
Knox 39125 98.55
Waldo 38765 98.69
Sagadahoc 34895 99.28
Lincoln 33660 98.94
Washington 31280 98.30
Franklin 29955 99.27
Piscataquis 16775 98.91