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Post Offices by County

BALTIMORE COUNTY, MARYLAND

ZIP Code Post Office Date Established Date Discontinued
21013 BALDWIN
21019 BENTLEY SPRINGS
21020 BORING 08/09/1880
21021 BRADSHAW 06/18/1887 09/19/1998
21022 BROOKLANDVILLE 09/05/1832
21023 BUTLER
CATONSVILLE 01/20/1831 09/14/1894
21027 CHASE
21030 COCKEYSVILLE
21051 FORK
21052 FORT HOWARD
21053 FREELAND
21055 GARRISON 04/04/1887 01/17/2004
21057 GLEN ARM
21071 GLYNDON 07/23/1873
HEREFORD 10/01/1812 08/31/1903
21082 HYDES
21087 KINGSVILLE
21092 LONG GREEN 12/15/1832 08/09/2008
21093 LUTHERVILLE-TIMONIUM
21105 MARYLAND LINE
21111 MONKTON 06/15/1838
21117 OWINGS MILLS 02/12/1833
21120 PARKTON 08/09/1843
21128 PERRY HALL
21131 PHOENIX
RANDALLSTOWN 05/25/1843 08/31/1907
RANDALLSTOWN 12/18/1824 05/01/1843
21133 RANDALLSTOWN 11/14/1922
21206 RASPEBURG 01/30/1901 12/19/1919
21136 REISTERSTOWN 09/07/1802
21139 RIDERWOOD
ROSEDALE 07/06/1931 04/30/1965
ROSEDALE 05/02/1878 01/17/1896
21152 SPARKS GLENCOE
21153 STEVENSON
21156 UPPER FALLS
21155 UPPERCO
21161 WHITE HALL
21162 WHITE MARSH

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