Below is a list of Altadena CA zip codes. For your research we have also included Altadena Area Code, Time Zone, UTC and the local Los Angeles County FIPS Code. Each Altadena California zip code has a center Longitude / Latitude point (the Altadena center is -118.139 / 34.1918). For your convenience we have also indicated if that zip code in Altadena observes Daylight Savings time. For more information on Altadena California you will find helpful business links and searches.