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Post Offices by County

CONTRA COSTA COUNTY,

CALIFORNIA

ZIP Code	Post Office	Date Established	Date Discontinued

94507	ALAMO	05/18/1852
94509	ANTIOCH	01/18/1855
94511	BETHEL ISLAND	08/16/1947
	BETHELL	12/27/1897	10/31/1902
94513	BRENTWOOD
94514	BYRON
94516	CANYON	08/23/1922
94517	CLAYTON	10/04/1861
94520	CONCORD	03/28/1872
94525	CROCKETT
94528	DIABLO	12/08/1916
94548	KNIGHTSEN
94549	LAFAYETTE	03/02/1857
94556	MORAGA
94561	OAKLEY
94563	ORINDA	11/15/1945
94564	PINOLE	08/29/1878
94565	PITTSBURG	12/01/1868
94569	PORT COSTA
94802	RICHMOND	06/29/1900
94572	RODEO
94583	SAN RAMON	11/20/1852
94596	WALNUT CREEK	12/01/1862