
Underwood
- County:
- Pottawattamie County
- County Seat:
- No
- Area (mi²):
- 1.089
- State:
- Iowa
Underwood is a city located in Pottawattamie County, Iowa. Underwood has a 2025 population of 961. Underwood is currently growing at a rate of 0.1% annually and its population has increased by 0.63% since the most recent census, which recorded a population of 955 in 2020.
The average household income in Underwood is $107,312 with a poverty rate of 2.52%. The median age in Underwood is 29.5 years: 28.9 years for males, and 30.8 years for females.