Below is a list of Steward IL zip codes. For your research we have also included Steward Area Code, Time Zone, UTC and the local Lee County FIPS Code. Each Steward Illinois zip code has a center Longitude / Latitude point (the Steward center is -89.024597167969 / 41.847499847412). For your convenience we have also indicated if that zip code in Steward observes Daylight Savings time.