Below is a list of Poweshiek County IA zip codes. For your research we have also included Poweshiek County Area Code, Time Zone, UTC and the local County FIPS Code. Each Poweshiek County Iowa zip code has a center Longitude / Latitude point (the Poweshiek County center is -92.497596740723 / 41.664501190186). For your convenience we have also indicated if that zip code in Poweshiek County observes Daylight Savings time.