City · Maryland · United States

Frederick, MD — ZIP codes

6 ZIP codes · Frederick County

City: Frederick
County: Frederick
State: Maryland
Country: United States
Postal codes: 217012170221703217042170521709
Single source
Coordinates: 39.4461, -77.3350 View on OpenStreetMap

ZIP codes (6)

Postal code	Place name	Verification
21701	Frederick	Single source
21702	Frederick	Single source
21703	Frederick	Single source
21704	Frederick	Single source
21705	Frederick	Single source
21709	Frederick	Single source

Sources and verification

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames. Last generated : 2026-08-21. Report an error.