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Post Offices by County
WASHINGTON COUNTY,
IOWA
ZIP Code
Post Office
Date Established
Date Discontinued
52201
AINSWORTH
52540
BRIGHTON
52621
CRAWFORDSVILLE
52247
KALONA
11/26/1879
NIRA
04/08/1880
10/15/1936
52327
RIVERSIDE
VALLEY
12/19/1851
05/15/1905
52353
WASHINGTON
03/02/1839
52356
WELLMAN
11/05/1849
52359
WEST CHESTER
01/27/1873
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