
Riverside
- County:
- Washington County
- County Seat:
- No
- Area (mi²):
- 1.846
- State:
- Iowa
Riverside is a city located in Washington County, Iowa. Riverside has a 2025 population of 1,036. Riverside is currently declining at a rate of -0.48% annually and its population has decreased by -2.26% since the most recent census, which recorded a population of 1,060 in 2020.
The average household income in Riverside is $87,691 with a poverty rate of 3.77%. The median age in Riverside is 40.6 years: 43.4 years for males, and 38.4 years for females.