Frederick zipcode
| City | Frederick |
| ZIP Code | 21705 |
| Type | PO Box |
| State Code | MD |
| State | Maryland |
ZIP code of Frederick is 21705. This place is located in Maryland state in US. To send any postal service to Frederick, you must use 21705 zipcode.
| City | Frederick |
| ZIP Code | 21705 |
| Type | PO Box |
| State Code | MD |
| State | Maryland |
ZIP code of Frederick is 21705. This place is located in Maryland state in US. To send any postal service to Frederick, you must use 21705 zipcode.
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