Below is a list of South Barrington IL zip codes. For your research we have also included South Barrington Area Code, Time Zone, UTC and the local Lake County FIPS Code. Each South Barrington Illinois zip code has a center Longitude / Latitude point (the South Barrington center is -88.135498046875 / 42.194301605225). For your convenience we have also indicated if that zip code in South Barrington observes Daylight Savings time.