Below is a list of Guttenberg IA zip codes. For your research we have also included Guttenberg Area Code, Time Zone, UTC and the local Clayton County FIPS Code. Each Guttenberg Iowa zip code has a center Longitude / Latitude point (the Guttenberg center is -91.105697631836 / 42.791500091553). For your convenience we have also indicated if that zip code in Guttenberg observes Daylight Savings time.