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Zip Code 21701 — Frederick, MD

21701 is a ZIP Code associated with Frederick, MD, located within Frederick. The postal region supports an estimated population of 43,048 residents across Data Pending housing units, with a population density of 418.6 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.447290, -77.335120)

Data Metric	Local Statistic
Postal / Zip Code	21701
Primary City	Frederick
State / Province	MD
County	Frederick
Total Population	43,048
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	418.6 people/sq mi
Timezone	America/New_York

How 21701 Compares

Metric	ZIP 21701	Frederick County	MD State Average
Population	43,048	300,100	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	418.6 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 21793	Walkersville	3.0 mi	10,719	N/A
Zip 21774	New Market	4.0 mi	17,134	N/A
Zip 21705	Frederick	4.8 mi	6	N/A
Zip 21762	Libertytown	5.2 mi	139	N/A
Zip 21798	Woodsboro	6.6 mi	2,928	N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →