Washington County, Maine Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 14th-largest in Maine
The population of Washington County, Maine is 31,261 as of the 2023 American Community Survey, making it the 14th-largest county in Maine. The median household income is $52,237, the median home value is $147,100, and the median age is 48.6.
The population of Washington County has declined 4.4% since 2010 (32,828 → 31,383), a -0.32% annualized rate.
31,261
Population
-0.32%
Annual growth
12
People / sq mi
$52,237
Median Income
$147,100
Median Home Value
Washington County covers 2,563 sq mi of land at 12.2 people per square mile.
About Washington County, ME
Washington County is a county in Maine with a population of 31,261. It ranks #14 among counties in Maine by population. The median age is 48.6, older than the national median. The population is 49.3% male and 50.7% female.
The median household income in Washington County is $52,237, below the US median of $74,580. 12.5% of residents live below the federal poverty level. Home values sit at a median of $147,100, with monthly rent averaging $768. The homeownership rate of 78.1% is higher than the national rate of 64.8%.
Educational attainment in Washington County reflects 24.9% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 10.0% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 21.6 minutes each way.
Washington County Population History (2010-2024)
The county of Washington County had a population of 32,828 in 2010 and 31,383 in 2024, a -4.4% growth over 14 years. The peak was 32,828 in 2010. Average annual growth rate: -0.32%.
31,383
Population (2024)
32,828
Population (2010)
32,828
Peak (2010)
-0.32%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 32,828 |
| 2011 | 32,724 |
| 2012 | 32,553 |
| 2013 | 32,268 |
| 2014 | 31,971 |
| 2015 | 31,783 |
| 2016 | 31,608 |
| 2017 | 31,370 |
| 2018 | 31,152 |
| 2019 | 31,286 |
| 2020 | 31,108 |
| 2021 | 31,213 |
| 2022 | 31,507 |
| 2023 | 31,446 |
| 2024 | 31,383 |
Race & Ethnicity
| White | 88.5% |
| Black or African American | 1.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 6.7% |
| Two or More Races | 0.0% |
Age & Sex
48.6
Median Age
50.7%
Female
49.3%
Male
25.8%
Age 65+
Age Distribution
Children (under 15): 15.1% · Seniors (65+): 25.8%
Income & Poverty
| Median household income | $52,237$-19,536 vs state |
| Mean household income | $71,586 |
| Per-capita income | $32,459 |
| Poverty rate | 12.5%+6.0% vs state |
| Unemployment rate | 3.5% |
| Employment-to-population | 48.9% |
Top Industries by Employment
The largest employment sector in Washington County is professional & business services, accounting for 29.9% of workers.
How residents commute
0.2%
Drive alone
3.6%
Carpool
75.2%
Public transit
10.0%
Work from home
21.6 min
Avg commute
Housing
$147,100$-119,300 vs state
Median home value
$768
Median rent
78.1%
Homeownership rate
21,703
Total housing units
64.5%
Occupied
35.5%
Vacant
21.9%
Renter-occupied
Social & access
90.2%
With health insurance
90.0%
With broadband internet
31.2%
Foreign-born
12.2%
Veterans (18+)
23.4%
With a disability
94.6%
Speak language other than English at home
Education
91.2%
High School+
24.9%
Bachelor's+
Largest cities in Maine
Other counties in Maine
Part of Maine
Metro areas in Maine
County rankings
Frequently Asked Questions
Washington County, Maine has a population of 31,261 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 14th-largest county in Maine. Population density is 12 people per square mile.
The population of Washington County has declined 4.4% since 2010 (32,828 → 31,383), a -0.32% annualized rate.
The median household income in Washington County, Maine is $52,237, with mean (average) household income of $71,586 and per-capita income of $32,459. 12.5% of residents live below the federal poverty level.
In Washington County, the largest racial and ethnic groups are White (88.5%), Hispanic or Latino (6.7%), Black or African American (1.0%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Washington County, Maine is 48.6 years. Residents are 50.7% female and 49.3% male.
The median home value in Washington County is $147,100 and median monthly rent is $768. 78.1% of occupied housing units are owner-occupied. The county has 21,703 total housing units, 35.5% of which are vacant.
The largest employment sector in Washington County, Maine is professional, scientific, and management services, employing 29.9% of workers. The unemployment rate is 3.5%.
Portland is among the largest cities associated with Washington 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.