Below is a list of Hiawatha IA zip codes. For your research we have also included Hiawatha Area Code, Time Zone, UTC and the local Linn County FIPS Code. Each Hiawatha Iowa zip code has a center Longitude / Latitude point (the Hiawatha center is -91.684700012207 / 42.045398712158). For your convenience we have also indicated if that zip code in Hiawatha observes Daylight Savings time.