Below is a list of Berwick IL zip codes. For your research we have also included Berwick Area Code, Time Zone, UTC and the local Warren County FIPS Code. Each Berwick Illinois zip code has a center Longitude / Latitude point (the Berwick center is -90.538101196289 / 40.798999786377). For your convenience we have also indicated if that zip code in Berwick observes Daylight Savings time.