Somerset County, Maine

Somerset County population, land area and income

Somerset County had 51,338 residents in the Census Vintage 2024 estimate, on 3,924.3 square miles of land. It ranks 9th of 16 in Maine by population and 3rd by land area. That works out to 13.1 people per square mile, below the US average of 96.3, and in the bottom quarter nationally.

The median county-equivalent in Maine has 54,142 residents, about the same as Somerset County.

Its SAIPE 2023 median household income of $56,422 is below the national county median among 3,143 counties with an estimate.

How Somerset County's population changed since 2020

Somerset County gained 865 residents between the July 2020 and July 2024 estimates, a rise of 1.7%. That ranks 13th of 16 in Maine for growth. The median Maine county changed by +3.0%, and the state as a whole by +3.0%.

Since the April 2020 estimates base, Somerset County recorded 1,898 births and 3,194 deaths, a natural change of -1,296. Net international migration added +68 and net domestic migration, people moving to or from other US counties, came to +2,049. The largest single component was domestic migration, which added 2,049 people.

Where Somerset County is

The Census internal point of Somerset County is at 45.503600, -69.956100. It sits in UTM zone 19N. The map shades Maine's 16 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Somerset County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Somerset County

No incorporated place of 1,000 or more people has residents in Somerset County. Its 51,338 residents live in smaller towns, census-designated places, or unincorporated land, which the subcounty estimates do not list at this size.

Counties bordering Somerset County

The Census 2024 county adjacency file lists 6 neighbors for Somerset County. The most populous is Penobscot County, ME, with 156,840 residents. Distances run between Census internal points in a straight line.

• Penobscot County

  156,840 people

  63 mi E

• Kennebec County

  128,461 people

  76 mi S

• Aroostook County

  66,776 people

  105 mi NE

• Waldo County

  40,617 people

  82 mi SSE

• Franklin County

  30,902 people

  43 mi SSW

• Piscataquis County

  17,432 people

  50 mi NE

Distance to Augusta and the nearest big city

Augusta is 83.1 miles S of Somerset County's internal point in a straight line. The nearest place of 100,000 or more is Manchester, NH (population 116,386), 189.0 miles away. The nearest place of 10,000 or more is Waterville, ME (population 17,336), 67.7 miles away.

Somerset County FIPS code

The FIPS code of Somerset County is 23025: state code 23 for Maine plus county code 025. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $56,422.