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.

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

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