Below is a list of Bethel Island CA zip codes. For your research we have also included Bethel Island Area Code, Time Zone, UTC and the local Contra Costa County FIPS Code. Each Bethel Island California zip code has a center Longitude / Latitude point (the Bethel Island center is -121.64099884033 / 38.02799987793). For your convenience we have also indicated if that zip code in Bethel Island observes Daylight Savings time.