Below is a list of Osceola IA zip codes. For your research we have also included Osceola Area Code, Time Zone, UTC and the local Clarke County FIPS Code. Each Osceola Iowa zip code has a center Longitude / Latitude point (the Osceola center is -93.777000427246 / 41.030498504639). For your convenience we have also indicated if that zip code in Osceola observes Daylight Savings time.