Postmaster Finder
Postal History
Research Sources
Postmaster Finder
Post Offices by County
WESTCHESTER COUNTY,
NEW YORK
ZIP Code
Post Office
Date Established
Date Discontinued
10501
AMAWALK
10502
ARDSLEY
03/02/1883
10503
ARDSLEY ON HUDSON
10504
ARMONK
02/10/1851
10506
BEDFORD
10507
BEDFORD HILLS
10510
BRIARCLIFF MANOR
BRONXVILLE
07/20/1852
04/30/1911
10511
BUCHANAN
10/21/1890
10514
CHAPPAQUA
10517
CROMPOND
02/28/1933
10518
CROSS RIVER
10519
CROTON FALLS
02/25/1833
10520
CROTON-ON-HUDSON
10522
DOBBS FERRY
10523
ELMSFORD
10526
GOLDENS BRIDGE
10527
GRANITE SPRINGS
10528
HARRISON
06/29/1871
10530
HARTSDALE
10532
HAWTHORNE
02/10/1851
10533
IRVINGTON
10535
JEFFERSON VALLEY
10536
KATONAH
07/14/1832
KENSICO
08/23/1849
07/31/1910
10537
LAKE PEEKSKILL
01/11/1933
10538
LARCHMONT
LEWISBORO
02/03/1842
05/30/1903
10540
LINCOLNDALE
08/19/1851
10543
MAMARONECK
09/23/1812
10545
MARYKNOLL
09/12/1921
10546
MILLWOOD
12/06/1881
10547
MOHEGAN LAKE
10548
MONTROSE
10549
MOUNT KISCO
10551
MOUNT VERNON
12/27/1851
10802
NEW ROCHELLE
11/30/1798
NORTH CASTLE
06/05/1809
04/30/1906
10560
NORTH SALEM
03/12/1819
10562
OSSINING
12/12/1797
10566
PEEKSKILL
03/20/1793
10570
PLEASANTVILLE
08/07/1873
10573
PORT CHESTER
10576
POUND RIDGE
10577
PURCHASE
01/17/1827
10578
PURDYS
08/16/1849
10579
PUTNAM VALLEY
10580
RYE
10583
SCARSDALE
06/17/1850
10587
SHENOROCK
10588
SHRUB OAK
02/19/1829
10589
SOMERS
01/29/1811
10590
SOUTH SALEM
10591
TARRYTOWN
10594
THORNWOOD
10595
VALHALLA
01/05/1861
10596
VERPLANCK
02/01/1838
10597
WACCABUC
WEST CHESTER
05/27/1826
12/13/1895
10602
WHITE PLAINS
11/14/1797
10701
YONKERS
05/12/1796
10598
YORKTOWN HEIGHTS
09/27/1881
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