Below is a list of Saint Joseph IL zip codes. For your research we have also included Saint Joseph Area Code, Time Zone, UTC and the local Champaign County FIPS Code. Each Saint Joseph Illinois zip code has a center Longitude / Latitude point (the Saint Joseph center is -88.040496826172 / 40.113201141357). For your convenience we have also indicated if that zip code in Saint Joseph observes Daylight Savings time.