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Zip Code 21703 — Frederick, MD

21703 is a ZIP Code associated with Frederick, MD, located within Frederick. The postal region supports an estimated population of 41,960 residents across Data Pending housing units, with a population density of 505.8 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.369610, -77.470880)

Data Metric	Local Statistic
Postal / Zip Code	21703
Primary City	Frederick
State / Province	MD
County	Frederick
Total Population	41,960
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	505.8 people/sq mi
Timezone	America/New_York

How 21703 Compares

Metric	ZIP 21703	Frederick County	MD State Average
Population	41,960	300,100	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	505.8 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 21717	Buckeystown	3.0 mi	245	N/A
Zip 21714	Braddock Heights	3.5 mi	95	N/A
Zip 21705	Frederick	4.2 mi	6	N/A
Zip 21710	Adamstown	5.2 mi	4,661	N/A
Zip 21755	Jefferson	5.3 mi	5,909	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 →