Founded on Feb 17, 1843, Poweshiek County is one of 99 counties in the state of Iowa. Historically, Poweshiek County was formed from Meskwaki lands. The city of Montezuma is the county seat. With FIPS code of 157, Poweshiek County has a population of 18,586 and area of 585 square miles (1,515 km2).
List of all cities in Poweshiek County, IA alphabetically
| City/Town | Postal Code | Area Code |
| Brooklyn, IA | 52211 | 641 |
| Deep River, IA | 52222 | 641 |
| Ewart, IA | 50171 | 641 |
| Grinnell, IA | 50112 | 641 |
| Guernsey, IA | 52221 | 319 |
| Hartwick, IA | 52232 | 319 |
| Holiday Lake, IA | 52211 | 641 |
| Malcom, IA | 50157 | 641 |
| Montezuma, IA | 50171 | 641 |
| Newburg, IA | 50112 | 641 |
| Oakland Acres, IA | 50112 | 641 |
| Searsboro, IA | 50242 | 641 |
| Sheridan, IA | 50157 | 641 |