Washington County, Colorado
County seat: Akron · Population 4,732 (2025) · 2,518 sq mi
Washington County is the 53rd most populous of Colorado's 64 counties, with 4,732 people (2025 estimate). Its county seat is Akron. It is part of the Region 1: Northern Eastern Plains region, one of the 14 Planning and Management Regions of Colorado. The map shows its 2 cities and towns and the 7 neighboring counties.
Washington County facts
- County seat
- Akron
- Population (2025 estimate)
- 4,732 −1.7% since 2020
- Land area
- 2,518 sq mi 12th largest of 64
- Water area
- 6 sq mi
- Population density
- 2 per sq mi
- Established
- 1887
- Same name
- One of 30 Washington Counties in the US
- Named after
- George Washington Founding Father and first U.S. president (1732–1799)
- Largest city
- Akron 1,725
- Median household income
- $67,167
- Cities and towns
- 2 plus 1 CDPs
- ZIP codes
- 12
- Time zone
- Mountain
- FIPS code
- 08121
Cities and towns in Washington County
Washington County has 2 incorporated cities, towns and villages. Populations count the people living inside Washington County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Akron (county seat) | Town | 1,725 | |
| Otis | Town | 502 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Cope | 58 |
ZIP codes in Washington County
12 ZIP codes reach into Washington County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 80720
- 80723 also Morgan County
- 80733 also Morgan County
- 80740
- 80741 also Logan and Morgan counties
- 80743
- 80757
- 80759 also Yuma County
- 80801
- 80812 also Yuma County
- 80815 also Kit Carson County
- 80818 also Lincoln County
Population of Washington County, 2020–2025
Washington County shrank by 84 people (−1.7%) between April 2020 and July 2025: 89 more deaths than births and a net gain of 5 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 4,810 |
| 2021 | 4,865 |
| 2022 | 4,839 |
| 2023 | 4,849 |
| 2024 | 4,748 |
| 2025 | 4,732 |
Neighboring counties
- Yuma County east · 9,896 people
- Morgan County northwest · 30,306 people
- Logan County north · 20,654 people
- Lincoln County south · 5,645 people
- Kit Carson County southeast · 7,069 people
- Adams County west · 554,668 people
- Arapahoe County west · 673,820 people
Printable Washington County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (68 KB)
- PNG (2400 px) (65 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
Back to the Colorado county map with all 64 counties. Found an error? Tell us.