Carroll County, Iowa
| Carroll County | |
|---|---|
| Location within the U.S. state of Iowa | |
| Iowa's location within the U.S. | |
| Coordinates: 42°02′14″N 94°51′32″W / 42.037222222222°N 94.858888888889°W | |
| Country | United States | 
| State | Iowa | 
| Founded | 1851 | 
| Named after | Charles Carroll of Carrollton | 
| Seat | Carroll | 
| Largest city | Carroll | 
| Area | |
|  • Total | 570 sq mi (1,500 km2) | 
| • Land | 569 sq mi (1,470 km2) | 
| • Water | 0.8 sq mi (2 km2) 0.1% | 
| Population  (2020) | |
|  • Total | 20,760 | 
| • Density | 36/sq mi (14/km2) | 
| Time zone | UTC−6 (Central) | 
| • Summer (DST) | UTC−5 (CDT) | 
| Congressional district | 4th | 
| Website | www | 
Carroll County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 20,760. Its county seat is Carroll. The county is named in honor of Charles Carroll of Carrollton, signer of the Declaration of Independence.