Below is a list of Sumner IA zip codes. For your research we have also included Sumner Area Code, Time Zone, UTC and the local Bremer County FIPS Code. Each Sumner Iowa zip code has a center Longitude / Latitude point (the Sumner center is -92.097801208496 / 42.847499847412). For your convenience we have also indicated if that zip code in Sumner observes Daylight Savings time.