Below is a list of Harrisburg IL zip codes. For your research we have also included Harrisburg Area Code, Time Zone, UTC and the local Saline County FIPS Code. Each Harrisburg Illinois zip code has a center Longitude / Latitude point (the Harrisburg center is -88.552398681641 / 37.737899780273). For your convenience we have also indicated if that zip code in Harrisburg observes Daylight Savings time.