Below is a list of Barrington IL zip codes. For your research we have also included Barrington Area Code, Time Zone, UTC and the local Lake County FIPS Code. Each Barrington Illinois zip code has a center Longitude / Latitude point (the Barrington center is -88.121597290039 / 42.147701263428). For your convenience we have also indicated if that zip code in Barrington observes Daylight Savings time.