Frederick postal codes — Maryland, United States
4 localities and postal codes in Frederick, within United States's three-level hierarchy.
Frederick postal codes
| Country | State | City | City | ZIP | Latitude | Longitude | Timezone |
|---|---|---|---|---|---|---|---|
| United States | Maryland | Frederick | Frederick | 21709 | 39.425882 | -77.402636 | America/New_York |
| United States | Maryland | Frederick | Jefferson | 21755 | 39.362090 | -77.531992 | America/New_York |
| United States | Maryland | Frederick | Middletown | 21769 | 39.443712 | -77.544710 | America/New_York |
| United States | Maryland | Frederick | Walkersville | 21793 | 39.486213 | -77.351929 | America/New_York |
Complete dataset
60,000 rows available in United States
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Get full database →About Frederick
Frederick is a city of Maryland, United States.
How postal codes work in Frederick
United States uses a single national postal-code format, written as 99999. Five digits, numeric only. Codes in Frederick follow that format like everywhere else in the country, for example 21709 for Frederick.
Every code listed here for Frederick begins with the prefix 21, which groups its delivery areas together within United States's national numbering.
Postal codes across United States, Frederick included, are issued and maintained by United States Postal Service (USPS).
Addressing format
Addresses in United States are written [House number] [Street name], [City] [Region] [Postal code], and an address in Frederick follows that same order:
What this dataset covers
This reference dataset lists 4 postal codes for Frederick, each paired with its locality and, where the source provides them, coordinates and a time zone.
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Frederick postal codes — frequently asked questions
What postal codes does Frederick use?
Every postal code listed here for Frederick begins with the prefix 21.
What format are postal codes in Frederick?
They use United States's national 99999 format. Five digits, numeric only. 21709 is one code from Frederick.
Who issues postal codes in Frederick?
United States Postal Service (USPS) issues and maintains postal codes throughout United States, Frederick included.
How many postal codes are listed for Frederick?
This reference dataset contains 4 postal codes for Frederick. That is the dataset's own count, not a claim about every code in use.
Which state is Frederick in?
Frederick is a city of Maryland, United States.