Below is a list of Holiday Hills IL zip codes. For your research we have also included Holiday Hills Area Code, Time Zone, UTC and the local Mchenry County FIPS Code. Each Holiday Hills Illinois zip code has a center Longitude / Latitude point (the Holiday Hills center is -88.289001464844 / 42.34220123291). For your convenience we have also indicated if that zip code in Holiday Hills observes Daylight Savings time.