Below is a list of Coffeen IL zip codes. For your research we have also included Coffeen Area Code, Time Zone, UTC and the local Montgomery County FIPS Code. Each Coffeen Illinois zip code has a center Longitude / Latitude point (the Coffeen center is -89.390197753906 / 39.089401245117). For your convenience we have also indicated if that zip code in Coffeen observes Daylight Savings time.