Contra Costa County, California

Contra Costa County, California, has 53 towns and 53 ZIP codes, in area codes 925 and 510 (overlay 341).

Towns in Contra Costa County, A to Z

Town	ZIP codes	Area codes
Acalanes Ridge	nearest94549, 94595, 94597	925
Alamo	94507	925
Alhambra Valley	nearest94523, 94549, 94553	925
Antioch	94509, 94531	925
Bay Point	nearest94519, 94520, 94565	925
Bayview	nearest94547, 94564, 94806	510, 341
Berkeley	94701, 94702, 94703, 94704, 94705, 94707 and more	510, 341, 925
Bethel Island	94511	925
Blackhawk	nearest94506, 94582, 94588	925, 510, 341
Brentwood	94513	925
Byron	94514	925
Camino Tassajara	nearest94506, 94582, 94588	925, 510, 341
Canyon	94516	925
Castle Hill	nearest94595, 94596, 94597	925
Clayton	94517	925
Clyde	nearest94519, 94520	925
Concord	94518, 94519, 94520, 94521, 94522, 94524 and more	925
Contra Costa Centre	nearest94523, 94597, 94598	925
Crockett	94525	510, 341
Danville	94506, 94526	925
Diablo	94528	925
Discovery Bay	94505	925
East Richmond Heights	nearest94530, 94803, 94805	510, 341
El Cerrito	94530	510, 341
El Sobrante	94803, 94820	510, 341
Hercules	94547	510, 341
Kensington	nearest94706, 94707, 94708	510, 341, 925
Knightsen	94548	925
Lafayette	94549	925
Martinez	94553	925
Montalvin Manor	nearest94564, 94803, 94806	510, 341
Moraga	94556, 94570, 94575	925
Norris Canyon	nearest94552, 94582, 94583	925, 510, 341
North Gate	nearest94518, 94596, 94598	925
North Richmond	nearest94801, 94805, 94806	510, 341
Oakley	94561	925
Orinda	94563	925
Pacheco	nearest94519, 94520, 94523	925
Pinole	94564	510, 341
Pittsburg	94565	925
Pleasant Hill	94523	925
Port Costa	94569	510, 341
Reliez Valley	nearest94523, 94549, 94597	925
Richmond	94801, 94802, 94804, 94805, 94807, 94808 and more	510, 341
Rodeo	94572	510, 341
Rollingwood	nearest94803, 94805, 94806	510, 341
San Pablo	94806	510, 341
San Ramon	94582, 94583	925
Saranap	nearest94595, 94596, 94597	925
Shell Ridge	nearest94596, 94597, 94598	925
Tara Hills	nearest94564, 94803, 94806	510, 341
Vine Hill	nearest94519, 94520, 94523	925
Walnut Creek	94595, 94596, 94597, 94598	925

ZIP codes in Contra Costa County

94505Discovery Bay925
94506Danville925
94507Alamo925
94509Antioch925
94511Bethel Island925
94513Brentwood925
94514Byron925
94516Canyon925
94517Clayton925
94518Concord925
94519Concord925
94520Concord925
94521Concord925
94522Concord925
94523Pleasant Hill925
94524Concord925
94525Crockett510, 341
94526Danville925
94527Concord925
94528Diablo925
94529Concord925
94530El Cerrito510, 341
94531Antioch925
94547Hercules510, 341
94548Knightsen925
94549Lafayette925
94553Martinez925
94556Moraga925
94561Oakley925
94563Orinda925
94564Pinole510, 341
94565Pittsburg925
94569Port Costa510, 341
94570Moraga925
94572Rodeo510, 341
94575Moraga925
94582San Ramon925
94583San Ramon925
94595Walnut Creek925
94596Walnut Creek925
94597Walnut Creek925
94598Walnut Creek925
94708Berkeley925
94801Richmond510, 341
94802Richmond510, 341
94803El Sobrante510, 341
94804Richmond510, 341
94805Richmond510, 341
94806San Pablo510, 341
94807Richmond510, 341
94808Richmond510, 341
94820El Sobrante510, 341
94850Richmond510, 341

Area codes in Contra Costa County

Area code 925
In service since March 14, 1998. Local calls are dialed with 1 plus ten digits.
Area code 510
In service since September 2, 1991. Shares its area with 341. Local calls are dialed with 1 plus ten digits.
Area code 341
In service since July 22, 2019. Shares its area with 510. Local calls are dialed with 1 plus ten digits.

Local numbers in area code 925

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