Somerset County, Maine Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 9th-largest in Maine
The population of Somerset County, Maine is 50,852 as of the 2023 American Community Survey, making it the 9th-largest county in Maine. The median household income is $56,199, the median home value is $155,200, and the median age is 46.9.
The population of Somerset County has declined 1.7% since 2010 (52,217 → 51,338), a -0.12% annualized rate.
50,852
Population
-0.12%
Annual growth
13
People / sq mi
$56,199
Median Income
$155,200
Median Home Value
Somerset County covers 3,924 sq mi of land at 13.0 people per square mile.
About Somerset County, ME
Somerset County is a county in Maine with a population of 50,852. It ranks #9 among counties in Maine by population. The median age is 46.9, older than the national median. The population is 49.8% male and 50.2% female.
The median household income in Somerset County is $56,199, below the US median of $74,580. 10.7% of residents live below the federal poverty level. Home values sit at a median of $155,200, with monthly rent averaging $887. The homeownership rate of 77.3% is higher than the national rate of 64.8%.
Educational attainment in Somerset County reflects 20.3% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 10.1% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 27.6 minutes each way.
Somerset County Population History (2010-2024)
The county of Somerset County had a population of 52,217 in 2010 and 51,338 in 2024, a -1.7% growth over 14 years. The peak was 52,217 in 2010. Average annual growth rate: -0.12%.
51,338
Population (2024)
52,217
Population (2010)
52,217
Peak (2010)
-0.12%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 52,217 |
| 2011 | 51,937 |
| 2012 | 51,821 |
| 2013 | 51,715 |
| 2014 | 51,254 |
| 2015 | 50,749 |
| 2016 | 50,562 |
| 2017 | 50,373 |
| 2018 | 50,568 |
| 2019 | 50,729 |
| 2020 | 50,473 |
| 2021 | 50,788 |
| 2022 | 51,027 |
| 2023 | 51,171 |
| 2024 | 51,338 |
Race & Ethnicity
| White | 95.1% |
| Black or African American | 0.5% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.4% |
| Two or More Races | 0.0% |
Age & Sex
46.9
Median Age
50.2%
Female
49.8%
Male
22.6%
Age 65+
Age Distribution
Children (under 15): 15.1% · Seniors (65+): 22.6%
Income & Poverty
| Median household income | $56,199$-15,574 vs state |
| Mean household income | $72,900 |
| Per-capita income | $32,452 |
| Poverty rate | 10.7%+4.2% vs state |
| Unemployment rate | 2.2% |
| Employment-to-population | 53.3% |
Top Industries by Employment
The largest employment sector in Somerset County is professional & business services, accounting for 24.3% of workers.
How residents commute
0.1%
Drive alone
2.3%
Carpool
77.0%
Public transit
10.1%
Work from home
27.6 min
Avg commute
Housing
$155,200$-111,200 vs state
Median home value
$887
Median rent
77.3%
Homeownership rate
30,009
Total housing units
75.8%
Occupied
24.2%
Vacant
22.7%
Renter-occupied
Social & access
92.2%
With health insurance
92.2%
With broadband internet
27.1%
Foreign-born
11.0%
Veterans (18+)
18.9%
With a disability
97.8%
Speak language other than English at home
Education
92.9%
High School+
20.3%
Bachelor's+
Largest cities in Maine
Other counties in Maine
Part of Maine
Metro areas in Maine
County rankings
Frequently Asked Questions
Somerset County, Maine has a population of 50,852 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 9th-largest county in Maine. Population density is 13 people per square mile.
The population of Somerset County has declined 1.7% since 2010 (52,217 → 51,338), a -0.12% annualized rate.
The median household income in Somerset County, Maine is $56,199, with mean (average) household income of $72,900 and per-capita income of $32,452. 10.7% of residents live below the federal poverty level.
In Somerset County, the largest racial and ethnic groups are White (95.1%), Hispanic or Latino (1.4%), Black or African American (0.5%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Somerset County, Maine is 46.9 years. Residents are 50.2% female and 49.8% male.
The median home value in Somerset County is $155,200 and median monthly rent is $887. 77.3% of occupied housing units are owner-occupied. The county has 30,009 total housing units, 24.2% of which are vacant.
The largest employment sector in Somerset County, Maine is professional, scientific, and management services, employing 24.3% of workers. The unemployment rate is 2.2%.
Portland is among the largest cities associated with Somerset County, Maine, with a population of 68,505.
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Full rankings of Maine counties
Statewide data for Maine
Population, race, income, age, and trends across Maine
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.