Below is a list of Calumet City IL zip codes. For your research we have also included Calumet City Area Code, Time Zone, UTC and the local Cook County FIPS Code. Each Calumet City Illinois zip code has a center Longitude / Latitude point (the Calumet City center is -87.55899810791 / 41.611999511719). For your convenience we have also indicated if that zip code in Calumet City observes Daylight Savings time.