Below is a list of Hickory Hills IL zip codes. For your research we have also included Hickory Hills Area Code, Time Zone, UTC and the local Cook County FIPS Code. Each Hickory Hills Illinois zip code has a center Longitude / Latitude point (the Hickory Hills center is -87.827598571777 / 41.718399047852). For your convenience we have also indicated if that zip code in Hickory Hills observes Daylight Savings time.