| Zip Code | City | State | County | Area Code | Time Zone | Latitude/Longitude | | 21701 | Frederick | Maryland | Frederick | 301 | Eastern | 39.40824/-77.40088 | | 21702 | Frederick | Maryland | Frederick | 301 | Eastern | 39.43653/-77.44737 | | 21703 | Frederick | Maryland | Frederick | 301 | Eastern | 39.39/-77.45 | | 21704 | Frederick | Maryland | Frederick | 301 | Eastern | 39.36/-77.39 | | 21705 | Frederick | Maryland | Frederick | 301 | Eastern | 39.43/-77.42 | | 21709 | Frederick | Maryland | Frederick | 301 | Eastern | 39.46/-77.4 |
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