Below is a list of Olney IL zip codes. For your research we have also included Olney Area Code, Time Zone, UTC and the local Richland County FIPS Code. Each Olney Illinois zip code has a center Longitude / Latitude point (the Olney center is -88.083602905273 / 38.731201171875). For your convenience we have also indicated if that zip code in Olney observes Daylight Savings time.