Below is a list of Osceola IN zip codes. For your research we have also included Osceola Area Code, Time Zone, UTC and the local St Joseph County FIPS Code. Each Osceola Indiana zip code has a center Longitude / Latitude point (the Osceola center is -86.080299377441 / 41.663299560547). For your convenience we have also indicated if that zip code in Osceola observes Daylight Savings time.