Below is a list of Mansfield IL zip codes. For your research we have also included Mansfield Area Code, Time Zone, UTC and the local Piatt County FIPS Code. Each Mansfield Illinois zip code has a center Longitude / Latitude point (the Mansfield center is -88.506301879883 / 40.213298797607). For your convenience we have also indicated if that zip code in Mansfield observes Daylight Savings time.