Below is a list of Saybrook IL zip codes. For your research we have also included Saybrook Area Code, Time Zone, UTC and the local Mclean County FIPS Code. Each Saybrook Illinois zip code has a center Longitude / Latitude point (the Saybrook center is -88.526702880859 / 40.425598144531). For your convenience we have also indicated if that zip code in Saybrook observes Daylight Savings time.