
Washington
- County:
- Washington County
- County Seat:
- Yes
- Area (mi²):
- 5.405
- State:
- Iowa
Washington is a city located in Washington County, Iowa. Washington has a 2025 population of 7,189. It is also the county seat of Washington County. Washington is currently declining at a rate of -0.43% annually and its population has decreased by -2.14% since the most recent census, which recorded a population of 7,346 in 2020.
The average household income in Washington is $81,641 with a poverty rate of 14.96%. The median age in Washington is 39.6 years: 36.4 years for males, and 44.2 years for females.