Below is a list of Creston IA zip codes. For your research we have also included Creston Area Code, Time Zone, UTC and the local Union County FIPS Code. Each Creston Iowa zip code has a center Longitude / Latitude point (the Creston center is -94.36499786377 / 41.061000823975). For your convenience we have also indicated if that zip code in Creston observes Daylight Savings time.