Below is a list of Larkspur CA zip codes. For your research we have also included Larkspur Area Code, Time Zone, UTC and the local Marin County FIPS Code. Each Larkspur California zip code has a center Longitude / Latitude point (the Larkspur center is -122.53500366211 / 37.937999725342). For your convenience we have also indicated if that zip code in Larkspur observes Daylight Savings time.