Founded on Jan 15, 1851, Carroll County is one of 99 counties in the state of Iowa. Historically, Carroll County was formed from Guthrie County. The city of Carroll is the county seat. With FIPS code of 27, Carroll County has a population of 20,692 and area of 569 square miles (1,474 km2).
List of all cities in Carroll County, IA alphabetically
| City/Town | Postal Code | Area Code |
| Arcadia, IA | 51430 | 712 |
| Breda, IA | 51436 | 712 |
| Carroll, IA | 51401 | 712 |
| Coon Rapids, IA | 50058 | 712 |
| Dedham, IA | 51440 | 712 |
| Glidden, IA | 51443 | 712 |
| Halbur, IA | 51444 | 712 |
| Lanesboro, IA | 51451 | 712 |
| Lidderdale, IA | 51452 | 712 |
| Manning, IA | 51455 | 712 |
| Maple River, IA | 51401 | 712 |
| Mount Carmel, IA | 51401 | 712 |
| Ralston, IA | 51459 | 712 |
| Roselle, IA | 51401 | 712 |
| Templeton, IA | 51463 | 712 |
| Willey, IA | 51401 | 712 |