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Post Offices by County
DOUGLAS COUNTY,
COLORADO
ZIP Code
Post Office
Date Established
Date Discontinued
80104
CASTLE ROCK
01/08/1872
80116
FRANKTOWN
05/22/1862
80118
LARKSPUR
80131
LOUVIERS
80134
PARKER
12/08/1870
80135
SEDALIA
04/08/1872
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