• county
  • FIPS 23029
  • Largest town: Calais

Washington County, Maine

Washington County had 31,383 residents in the Census Vintage 2024 estimate, on 2,562.7 square miles of land. It ranks 14th of 16 in Maine by population and 5th by land area.

Population
31,383
#14 of 16 in Maine · #1,406 in US
Area
2,562.7 sq mi
#5 of 16 in Maine · #212 in US
Density
12 / sq mi
#14 of 16 in Maine · #2,492 in US
Median household income
$48,104
#16 of 16 in Maine · #2,825 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Washington County within Maine. Pin: Augusta.

Measure from here

Tools and pages that start from Washington County

Washington County population, land area and income

Washington County had 31,383 residents in the Census Vintage 2024 estimate, on 2,562.7 square miles of land. It ranks 14th of 16 in Maine by population and 5th by land area. That works out to 12.2 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; Washington County is somewhat smaller.

Its SAIPE 2023 median household income of $48,104 is in the bottom quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

31,383

3144th1st

1406th of 3,144 (US)

Land area

2,563 sq mi

3144th1st

212th of 3,144 (US)

Density

12.2 / sq mi

3144th1st

2492nd of 3,144 (US)

Median household income

$48,104

3143rd1st

2825th of 3,143 (US)

Rank within Maine (16)

Population

31,383

16th1st

14th of 16 (ME)

Land area

2,563 sq mi

16th1st

5th of 16 (ME)

Density

12.2 / sq mi

16th1st

14th of 16 (ME)

Median household income

$48,104

16th1st

16th of 16 (ME)

How Washington County's population changed since 2020

Washington County gained 275 residents between the July 2020 and July 2024 estimates, a rise of 0.9%. That ranks 14th 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, Washington County recorded 1,123 births and 2,456 deaths, a natural change of -1,333. Net international migration added +136 and net domestic migration, people moving to or from other US counties, came to +1,452. The largest single component was domestic migration, which added 1,452 people.

31.1k202031.2k202131.5k202231.4k202331.4k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
1,123
Deaths
2,456
Net international migration
+136
Net domestic migration
+1,452
Change, July 2023 to July 2024
-63

Where Washington County is

The Census internal point of Washington County is at 44.967000, -67.609400. 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 Washington County outlined. Dots are towns of 1,000+ people with residents in it.

York County: +3.7%Hancock County: +2.6%Washington County: +0.9%Aroostook County: -0.4%Androscoggin County: +3.7%Sagadahoc County: +2.3%Franklin County: +4.9%Oxford County: +3.7%Waldo County: +2.4%Somerset County: +1.7%Cumberland County: +3.4%Kennebec County: +3.0%Piscataquis County: +3.8%Penobscot County: +3.1%Knox County: +0.8%Lincoln County: +3.5%
Change 2020 to 2024
  1. < +1.7%
  2. < +2.6%
  3. < +3.4%
  4. < +3.7%
  5. ≥ +3.7%
no data

Orange pin: Washington County internal point. Dark pin: Augusta.

Internal point

Decimal
44.967000, -67.609400
DMS
44°58'1.20"N 67°36'33.84"W
UTM
19N 609663.5E 4980225.1N
Geohash
drzzv9brf
Plus code
87PJX98R+Q6

Towns in Washington County

2 incorporated places of 1,000+ people have residents in Washington County, 4,397 people together, or 14% of the county. Each figure counts only the part of the town inside Washington County; towns marked "part" extend into another county. The largest is Calais with 3,105.

  1. 01Calais3,105
  2. 02Eastport1,292
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Washington County

The Census 2024 county adjacency file lists 3 neighbors for Washington County. The most populous is Penobscot County, ME, with 156,840 residents. Distances run between Census internal points in a straight line.

Distance to Augusta and the nearest big city

Augusta is 116.1 miles WSW of Washington County's internal point in a straight line. The nearest place of 100,000 or more is Manchester, NH (population 116,386), 234.7 miles away. The nearest place of 10,000 or more is Bangor, ME (population 32,446), 58.5 miles away.

Washington County FIPS code

The FIPS code of Washington County is 23029: state code 23 for Maine plus county code 029. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $48,104.

Questions people ask

What is the population of Washington County, Maine?

The Census Vintage 2024 estimate for July 1, 2024 is 31,383. That is up 275 people (0.9%) from the July 2020 estimate of 31,108.

What is the FIPS code of Washington County?

23029. The first two digits (23) are Maine; the last three (029) identify the county.

What is the largest town in Washington County?

Calais, with 3,105 residents inside Washington County in 2024.

Which counties border Washington County?

3 county-equivalents border it in the Census 2024 adjacency file: Penobscot County, ME; Aroostook County, ME; Hancock County, ME.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.