Below is a list of Piedmont CA zip codes. For your research we have also included Piedmont Area Code, Time Zone, UTC and the local Alameda County FIPS Code. Each Piedmont California zip code has a center Longitude / Latitude point (the Piedmont center is -122.23999786377 / 37.815101623535). For your convenience we have also indicated if that zip code in Piedmont observes Daylight Savings time.