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Frederick
Zip Codes in Frederick County, Maryland
Map of ZIP Codes in Frederick County
Zip Code
City
County
21718
Burkittsville
Frederick
21727
Emmitsburg
Frederick
21754
Ijamsville
Frederick
21755
Jefferson
Frederick
21758
Knoxville
Frederick
21759
Ladiesburg
Frederick
21762
Libertytown
Frederick
21769
Middletown
Frederick
21770
Monrovia
Frederick
21771
Mount Airy
Frederick
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Frederick County, MD
31 Zip Codes
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