Codes.zone

California Area Codes

Area codes
41
ZIP codes
2,593
Cities & towns
1,239
Counties
58

Every area code in California

All California area codes, what each primarily serves, and which share ground with another.
Area codePrimarily servesShares ground withIn service
209Fresno3501958
213Los Angeles323, 7381947
279Sacramento9162018
310Los Angeles4241991
323Los Angeles213, 7381998
341San Francisco5102019
350Fresno2092022
357Fresno5592025
369Santa Rosa7072023
408San Jose6691959
415San Francisco6281947
424Los Angeles3102006
442San Diego7602009
510San Francisco3411991
530Sacramento8371997
559Fresno3571998
562Los Angelesno overlay1997
619San Diego8581982
626Los Angelesno overlay1997
628San Francisco4152015
650San Joseno overlay1997
657Los Angeles7142008
661Bakersfieldno overlay1999
669San Jose4082012
707Santa Rosa3691959
714Los Angeles6571951
738Los Angeles213, 3232024
747Los Angeles8182009
760San Diego4421997
805Bakersfield8201957
818Los Angeles7471984
820Bakersfield8052018
831Salinasno overlay1998
837Sacramento5302025
840Anaheim9092021
858San Diego6191999
909Anaheim8401992
916Sacramento2791947
925Oaklandno overlay1998
949Anaheimno overlay1998
951Riversideno overlay2004

A code in the “shares ground” column is an overlay: it covers the same territory rather than a different part of California, which is why local calls there are dialled as ten digits.

Which codes share the same ground

California has 16 groups of codes that overlay one another: the codes inside a group cover the same territory rather than different parts of the state, so local calls there are dialled as ten digits.

562, 626, 650, 661, 831, 925, 949 and 951 have no overlay: each is the only code serving its own territory.

Where California's communities sit

Each point is a California community, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.
  • Reference points and footprint
  • Not an official NANPA boundary
  • Not a USPS delivery area

Largest California cities and their codes

largest 25

Scope every area code assigned to California. Source LocalCallingGuide NPA list (2026-07 NPA list) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated . Overlay relationships come from the numbering-plan authority; the city match is computed.