Frederick ZIP Codes

List of Zip Codes of Frederick

The following table lists ZIP Codes associated with Frederick, Maryland, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.


S.N. Zip Code Latitude Longitude County Population Density
1 21701 39.44729 -77.33512 Frederick 41,340 402.0
2 21702 39.48019 -77.4578 Frederick 47,437 439.0
3 21703 39.36961 -77.47088 Frederick 41,766 503.5
4 21704 39.3506 -77.3735 Frederick 19,623 284.5
5 21705 39.40887 -77.41002 Frederick 4 65.3


About Frederick Maryland Zip Codes

The city of Frederick in Maryland (MD) is served by approximately 5 ZIP Codes. These codes cover residential neighborhoods, business districts, and surrounding localities that use the city name in their mailing address.

Based on ZIP-level population estimates, the combined population covered by these ZIP Codes is around 150,170 people. Population density can vary significantly from one ZIP Code to another, reflecting the mix of dense urban blocks, commercial corridors, and lower-density residential areas.

The ZIP Codes associated with Frederick fall within county jurisdictions such as Frederick. Each county manages local services, land use, and administration for the areas corresponding to its ZIP Codes.

Most ZIP codes for Frederick, Maryland follow the America/New_York time zone.