Below is a list of Duarte CA zip codes. For your research we have also included Duarte Area Code, Time Zone, UTC and the local Los Angeles County FIPS Code. Each Duarte California zip code has a center Longitude / Latitude point (the Duarte center is -117.96800231934 / 34.15230178833). For your convenience we have also indicated if that zip code in Duarte observes Daylight Savings time.