Below is a list of Greenfield IL zip codes. For your research we have also included Greenfield Area Code, Time Zone, UTC and the local Greene County FIPS Code. Each Greenfield Illinois zip code has a center Longitude / Latitude point (the Greenfield center is -90.210800170898 / 39.344699859619). For your convenience we have also indicated if that zip code in Greenfield observes Daylight Savings time.