Below is a list of Green Oaks IL zip codes. For your research we have also included Green Oaks Area Code, Time Zone, UTC and the local Lake County FIPS Code. Each Green Oaks Illinois zip code has a center Longitude / Latitude point (the Green Oaks center is -87.858001708984 / 42.28630065918). For your convenience we have also indicated if that zip code in Green Oaks observes Daylight Savings time.