Below is a list of Dieterich IL zip codes. For your research we have also included Dieterich Area Code, Time Zone, UTC and the local Effingham County FIPS Code. Each Dieterich Illinois zip code has a center Longitude / Latitude point (the Dieterich center is -88.379997253418 / 39.060298919678). For your convenience we have also indicated if that zip code in Dieterich observes Daylight Savings time.