There are 8 zip codes in Poweshiek County, Iowa. The most populated is 50112, located in Grinnell. * 2024 populations estimated based on the latest ACS 5-year data.

Download Table Data

Enter your email below, and you'll receive this table's data in your inbox momentarily.

Zip Code
Population
City
5011211,827Grinnell
522112,638Brooklyn
501712,440Montezuma
52222731Deep River
50157705Malcom
50242478Searsboro
52221359Guernsey
52232306Hartwick
showing: 8 rows

Zip Codes in Poweshiek County, Iowa by Population (2024)