Below is a list of Dexter IA zip codes. For your research we have also included Dexter Area Code, Time Zone, UTC and the local Dallas County FIPS Code. Each Dexter Iowa zip code has a center Longitude / Latitude point (the Dexter center is -94.228103637695 / 41.518100738525). For your convenience we have also indicated if that zip code in Dexter observes Daylight Savings time.