Below is a list of Dyersville IA zip codes. For your research we have also included Dyersville Area Code, Time Zone, UTC and the local Dubuque County FIPS Code. Each Dyersville Iowa zip code has a center Longitude / Latitude point (the Dyersville center is -91.111801147461 / 42.48210144043). For your convenience we have also indicated if that zip code in Dyersville observes Daylight Savings time.