Rockwell City
- County:
- Calhoun County
- County Seat:
- Yes
- Area (mi²):
- 4.213
- State:
- Iowa
Rockwell City is a city located in Calhoun County, Iowa. Rockwell City has a 2026 population of 2,185. It is also the county seat of Calhoun County. Rockwell City is currently declining at a rate of -0.68% annually and its population has decreased by -3.02% since the most recent census, which recorded a population of 2,253 in 2020.