Data Last Updated: June 1, 2023

CONTRA COSTA County, CA ZIP Codes

CONTRA COSTA County, CA Covers 52 ZIP Codes

ZIP Code	Classification	City	Population	Timezone	Area Code(s)
ZIP Code 94505	General	Discovery Bay	15,445	Pacific	925
ZIP Code 94506	General	Danville	25,361	Pacific	925
ZIP Code 94507	General	Alamo	15,495	Pacific	925
ZIP Code 94509	General	Antioch	69,931	Pacific	925
ZIP Code 94511	P.O. Box	Bethel Island	2,131	Pacific	925
ZIP Code 94513	General	Brentwood	67,394	Pacific	925
ZIP Code 94514	General	Byron	1,248	Pacific	925
ZIP Code 94516	P.O. Box	Canyon	212	Pacific	925
ZIP Code 94517	General	Clayton	12,525	Pacific	925
ZIP Code 94518	General	Concord	27,209	Pacific	925
ZIP Code 94519	General	Concord	18,677	Pacific	925
ZIP Code 94520	General	Concord	38,383	Pacific	925
ZIP Code 94521	General	Concord	42,885	Pacific	925
ZIP Code 94522	P.O. Box	Concord	0	Pacific	925
ZIP Code 94523	General	Pleasant Hill	35,272	Pacific	925
ZIP Code 94524	P.O. Box	Concord	0	Pacific	925
ZIP Code 94525	General	Crockett	3,288	Pacific	510/341
ZIP Code 94526	General	Danville	33,064	Pacific	925
ZIP Code 94527	P.O. Box	Concord	0	Pacific	925
ZIP Code 94528	P.O. Box	Diablo	1,054	Pacific	925
ZIP Code 94529	Unique	Concord	0	Pacific	925
ZIP Code 94530	General	El Cerrito	26,360	Pacific	510/341
ZIP Code 94531	General	Antioch	45,342	Pacific	925
ZIP Code 94547	General	Hercules	26,016	Pacific	510/341
ZIP Code 94548	P.O. Box	Knightsen	420	Pacific	925
ZIP Code 94549	General	Lafayette	28,637	Pacific	925
ZIP Code 94553	General	Martinez	49,756	Pacific	925
ZIP Code 94556	General	Moraga	16,134	Pacific	925
ZIP Code 94561	General	Oakley	44,545	Pacific	925
ZIP Code 94563	General	Orinda	19,496	Pacific	925
ZIP Code 94564	General	Pinole	19,024	Pacific	510/341
ZIP Code 94565	General	Pittsburg	100,341	Pacific	925
ZIP Code 94569	P.O. Box	Port Costa	210	Pacific	510/341
ZIP Code 94570	P.O. Box	Moraga	0	Pacific	925
ZIP Code 94572	General	Rodeo	9,622	Pacific	510/341
ZIP Code 94575	General	Moraga	933	Pacific	925
ZIP Code 94582	General	San Ramon	49,311	Pacific	925
ZIP Code 94583	General	San Ramon	38,444	Pacific	925
ZIP Code 94595	General	Walnut Creek	17,716	Pacific	341/510/707/925
ZIP Code 94596	General	Walnut Creek	22,861	Pacific	341/510/707/925
ZIP Code 94597	General	Walnut Creek	23,661	Pacific	925
ZIP Code 94598	General	Walnut Creek	26,826	Pacific	341/510/707/925
ZIP Code 94801	General	Richmond	33,486	Pacific	510/341
ZIP Code 94802	P.O. Box	Richmond	0	Pacific	341/510
ZIP Code 94803	General	El Sobrante	26,457	Pacific	510/341
ZIP Code 94804	General	Richmond	45,108	Pacific	510/341
ZIP Code 94805	General	Richmond	14,958	Pacific	510/341
ZIP Code 94806	General	San Pablo	64,589	Pacific	510/341
ZIP Code 94807	P.O. Box	Richmond	0	Pacific	341/510
ZIP Code 94808	P.O. Box	Richmond	0	Pacific	341/510
ZIP Code 94820	P.O. Box	El Sobrante	0	Pacific	510/341
ZIP Code 94850	General	Richmond	0	Pacific	341/510

Timezone(s):	Pacific

Population:	39,538,223 (More Details)
Male Population:	19,549,003
Female Population:	19,989,220
Median Age:	38

ZIP Codes:	52
Cities:	30
Counties:	1
Area Codes:	0

Total Area:	804 square miles (county)
Land Area:	723 square miles (county)
Water Area:	81 square miles (county)

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CONTRA COSTA, CA Demographic Information

* Demographic data is based on 2020 Census.

Total population of CONTRA COSTA County, CA	1,165,927
Male population of CONTRA COSTA County, CA	568,066
Female population of CONTRA COSTA County, CA	597,861
Median age (years)	40.1
White Population	501,697
Black Population	101,485
Indian Population	12,043
Asian Population	217,823
Hawaiian Population	6,250
Hispanic Population	314,900
Median age (Male)	38.8
Median age (Female)	41.2
Total households	407,029
Average household size for CONTRA COSTA County, CA	2.84
Average family size of CONTRA COSTA County, CA	3
Total housing units for CONTRA COSTA County, CA	423,342

CONTRA COSTA County, CA ZIP Codes

CONTRA COSTA County, CA Covers 52 ZIP Codes

CONTRA COSTA, CA Demographic Information

CONTRA COSTA County, CA Covers 30 Cities