Below is a list of Alleghany CA zip codes. For your research we have also included Alleghany Area Code, Time Zone, UTC and the local Sierra County FIPS Code. Each Alleghany California zip code has a center Longitude / Latitude point (the Alleghany center is -120.663 / 39.5362). For your convenience we have also indicated if that zip code in Alleghany observes Daylight Savings time. For more information on Alleghany California you will find helpful business links and searches.