This guide will shed light on the area codes in California and how to perform a reverse phone lookup in California directly online. knowing what California area codes are can help in determining where a phone number is calling you from. However, because of technology, you will not need much more information when searching for reverse phone number other than the number.
California Quick Facts
State: California
Population: 39.56 million (2018)
Capital: Sacramento
Number of area codes: 35
Web: CA.GOV
How to perform a California reverse phone lookup
Use a service to perform a California reverse phone lookup directly online. This is by far the most effective way to search for phone numbers to uncover who is calling you. The great part about a reverse phone search is that you can then take the person name and run that into a system that will help build a background check on someone. This can help find criminal records, arrest records, contact details, photos, and more directly online.
California area codes and location boundary
Area code
Location
209
Stockton Merced, Modesto and northern San Joaquin Valley and central Sierra Nevada range
213
City of Los Angeles outside the San Fernando Valley
279
Overlay of 916 area code that started on March 10, 2018
310
Southwest protions of Los Angelese county, Malibu, Santa Monica, Pacific Palisades, Torrance, Compton, Beverly Hills, Catalina Island
323
Most of the city of Las Angeles that is outside of San Fernando Valley
341
Overlay of area code 510. Started service on July 22, 2019
408
Gilroy, San Jose, Sunnyvale, Morgan Hill, most of Santa Clara County and Los Gatos
415
Martin County, San Francisco, San Rafael, Novato, most of Martin County
424
310 overlay that started service on August 26 2006
442
760 overlay that started service on October 24 2009
510
Western Alameda and Contra Costa Counties. Oakland, Fremont, Berkeley, Richmond
530
Chico, Davis, Marysville, Oroville, Red Bluff, Placerville, Yuba City, Truckee, Redding. Including most of Sacramento Valley
559
Fresno, Madera, Visalia, Hanford
562
Whittier, Morwalk, Long Beach, Bellflower, Lakewood, Cerritos.
619
Suburbs and city of San Diego
626
West Covina, El Monte, Pasadena, San Gabriel Valley
628
Overlay with 415. Took effect on March 21, 2015
650
Palo Alto, San Mateo, Redwood City, Daly City. northwestern Santa Clara County and most of San Mateo County
657
Overlay with 714
661
Santa Clarita, Palmdale, Bakersfield, northern Los Angeles County that includes Antelope Valley and most of Kern County
669
Overlay with 408
707
Eureka, Santa Rosa, Sebastopol, Petaluma, Vallejo, Napa, Fairfield. Includes northern Bay Area, Redwood Empire, and Wine Country
714
Anaheim, Santa Ana, Orange, Garden Grove, Huntington Beach, northern and western Orange County
747
Overlay with 818
760
Bishop, Oceanside, Palm Springs, Needles, Victorville, Barstow, Ridgecrest, Northern San Diego County, San Bernardino, eastern Riverside Counties
805
San Luis Obispo, Santa Barbara, Ventura, Santa Maria, Oxnard, Santa Paula, San luis Obispo, Ventura, and Santa Barbara counties
818
San Fernando Valley: Glendale, Burbank. Cities in San Fernando Valley and North Hollywood, Panorama City, Northridge, Sherman Oaks
820
Overlay with 805 area code
831
Santa Cruz, Monterey, Hollister, Salinas, northern Central Coast
858
San Diego and its suburbs
909
San Bernardino County, Eastern Los Angeles County. Ontario, Chino, Pomona
916
Folsom, Roseville, Southern Placer County and Sacramento County
925
Contra Costa and eastern Alameda Counties. Concord, Livermore, Walnut Creek, Pleasanton, Martinez, San Ramon, and Antioch
949
Southern and eastern Orange County: Irvine, Newport Beach, Laguna Beach, San Clemente, San Juan Capistrano
951
Riverside County, Corona, Moreno Valley, Temecula, Perris, Murrieta
