Below is a list of Crestwood IL zip codes. For your research we have also included Crestwood Area Code, Time Zone, UTC and the local Cook County FIPS Code. Each Crestwood Illinois zip code has a center Longitude / Latitude point (the Crestwood center is -87.73860168457 / 41.63570022583). For your convenience we have also indicated if that zip code in Crestwood observes Daylight Savings time.