• county
  • FIPS 08121
  • Largest town: Akron

Washington County, Colorado

Washington County had 4,771 residents in the Census Vintage 2024 estimate, on 2,518.1 square miles of land. It ranks 53rd of 64 in Colorado by population and 12th by land area.

Population
4,771
#53 of 64 in Colorado · #2,835 in US
Area
2,518.1 sq mi
#12 of 64 in Colorado · #217 in US
Density
1.9 / sq mi
#58 of 64 in Colorado · #2,996 in US
Median household income
$54,255
#51 of 64 in Colorado · #2,395 in US

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

Washington County within Colorado. Pin: Denver.

Measure from here

Tools and pages that start from Washington County

Washington County population, land area and income

Washington County had 4,771 residents in the Census Vintage 2024 estimate, on 2,518.1 square miles of land. It ranks 53rd of 64 in Colorado by population and 12th by land area. That works out to 1.9 people per square mile, below the US average of 96.3, and in the bottom quarter nationally.

The median county-equivalent in Colorado has 15,336 residents, so Washington County has 31% of the typical county's population.

Its SAIPE 2023 median household income of $54,255 is in the bottom quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

4,771

3144th1st

2835th of 3,144 (US)

Land area

2,518 sq mi

3144th1st

217th of 3,144 (US)

Density

1.9 / sq mi

3144th1st

2996th of 3,144 (US)

Median household income

$54,255

3143rd1st

2395th of 3,143 (US)

Rank within Colorado (64)

Population

4,771

64th1st

53rd of 64 (CO)

Land area

2,518 sq mi

64th1st

12th of 64 (CO)

Density

1.9 / sq mi

64th1st

58th of 64 (CO)

Median household income

$54,255

64th1st

51st of 64 (CO)

How Washington County's population changed since 2020

Washington County lost 43 residents between the July 2020 and July 2024 estimates, a drop of 0.9%. That ranks 46th of 64 in Colorado for growth. The median Colorado county changed by +1.7%, and the state as a whole by +2.9%.

Since the April 2020 estimates base, Washington County recorded 206 births and 273 deaths, a natural change of -67. Net international migration added +35 and net domestic migration, people moving to or from other US counties, came to -15. The largest single component was natural change, which removed 67 people.

4,81420204,86920214,84020224,85920234,7712024
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
206
Deaths
273
Net international migration
+35
Net domestic migration
-15
Change, July 2023 to July 2024
-88

Where Washington County is

The Census internal point of Washington County is at 39.965800, -103.209700. It sits in UTM zone 13N. The map shades Colorado's 64 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.

Otero County: -3.6%Lake County: -0.6%Adams County: +4.3%Kit Carson County: +0.2%Phillips County: -0.9%Bent County: +5.5%Lincoln County: -1.1%Washington County: -0.9%Hinsdale County: -5.1%Alamosa County: +1.9%Kiowa County: -4.1%Arapahoe County: +1.8%Archuleta County: +5.1%Montrose County: +4.6%Jefferson County: -0.8%Gilpin County: +2.5%Larimer County: +4.1%Custer County: +17.5%Saguache County: +4.3%Mineral County: +7.1%Broomfield County: +5.1%Logan County: -2.1%Mesa County: +3.4%Eagle County: -2.4%Denver County: +1.6%Pitkin County: -4.2%Boulder County: -0.2%El Paso County: +2.6%Las Animas County: +0.1%San Miguel County: -2.9%Douglas County: +9.3%Cheyenne County: -1.9%Garfield County: +2.2%Ouray County: +6.5%San Juan County: +16.0%Yuma County: +0.8%Elbert County: +12.1%Prowers County: -0.5%Morgan County: +4.2%Delta County: +3.7%Chaffee County: +6.6%Huerfano County: +2.4%Teller County: +0.5%Costilla County: +5.3%Baca County: -3.3%Routt County: +1.6%Conejos County: +1.3%Summit County: -1.1%Clear Creek County: -3.0%Fremont County: +2.5%Rio Blanco County: +1.3%Dolores County: +5.8%Grand County: +2.6%Gunnison County: +2.1%Park County: +5.1%Sedgwick County: -5.5%Montezuma County: +3.7%La Plata County: +2.1%Moffat County: -1.0%Rio Grande County: -3.6%Weld County: +11.5%Pueblo County: +0.9%Jackson County: -7.6%Crowley County: -1.5%
Change 2020 to 2024
  1. < -1.9%
  2. < +0.5%
  3. < +2.4%
  4. < +5.1%
  5. ≥ +5.1%
no data

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

Internal point

Decimal
39.965800, -103.209700
DMS
39°57'56.88"N 103°12'34.92"W
UTM
13N 652900.1E 4425496.0N
Geohash
9xne77scx
Plus code
85FRXQ8R+84

Towns in Washington County

One incorporated place of 1,000+ people has residents in Washington County, 1,745 people together, or 37% 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 Akron with 1,745.

  1. 01Akron1,745
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Washington County

The Census 2024 county adjacency file lists 7 neighbors for Washington County. The most populous is Arapahoe County, CO, with 666,918 residents. Distances run between Census internal points in a straight line.

Distance to Denver and the nearest big city

Denver is 95.5 miles W of Washington County's internal point in a straight line. The nearest place of 100,000 or more is Aurora, CO (population 403,130), 82.1 miles away. The nearest place of 10,000 or more is Fort Morgan, CO (population 11,835), 36.5 miles away.

Washington County FIPS code

The FIPS code of Washington County is 08121: state code 08 for Colorado plus county code 121. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $54,255.

Questions people ask

What is the population of Washington County, Colorado?

The Census Vintage 2024 estimate for July 1, 2024 is 4,771. That is down 43 people (0.9%) from the July 2020 estimate of 4,814.

What is the FIPS code of Washington County?

08121. The first two digits (08) are Colorado; the last three (121) identify the county.

What is the largest town in Washington County?

Akron, with 1,745 residents inside Washington County in 2024.

Which counties border Washington County?

7 county-equivalents border it in the Census 2024 adjacency file: Arapahoe County, CO; Adams County, CO; Morgan County, CO; Logan County, CO; Yuma County, CO; Kit Carson County, CO; Lincoln County, CO.

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.