Maine Citizen Population By County in 2021 (ACS-5Yrs)

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2021, the citizen population for Maine was 1,334,755 and represented 98.36% of the total Maine population.

Among all Maine counties, Cumberland had the highest citizen population (292.09K), followed by York (207.29K), and Penobscot (150.03K).

In terms of percentages, Lincoln had the highest percentage of its population being citizens (99.47%), followed by Oxford (99.41%), and Somerset (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.