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BLACK HAWK COUNTY,
IOWA
ZIP Code
Post Office
Date Established
Date Discontinued
50613
CEDAR FALLS
50623
DEWAR
50626
DUNKERTON
12/11/1886
50634
GILBERTVILLE
50643
HUDSON
07/30/1857
50651
LA PORTE CITY
07/18/1855
50667
RAYMOND
50701
WATERLOO
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