Washington County
Also known as Washington County, Iowa, Washington County, IA
county in Iowa, United States
Key facts
- Country
- United States
- State
- Iowa
- Founded
- January 18, 1838
- Named after
- George Washington
- Seat
- Washington
- Largest city
- Washington
- Total
- 571 sq mi (1,480 km )
- Land
- 569 sq mi (1,470 km )
- Water
- 2.1 sq mi (5.4 km ) 0.4%
- Estimate 2025
- 22,667
- Density
- 39.7/sq mi (15.3/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
~7 min read
Article
Washington County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 22,565. The county seat and the largest city is Washington. Washington County is included in the Iowa City metropolitan area.
History