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Zip Code 21755 — Jefferson, MD

21755 is a ZIP Code associated with Jefferson, MD, located within Frederick. The postal region supports an estimated population of 5,909 residents across Data Pending housing units, with a population density of 66.5 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.361010, -77.568870)

Data Metric	Local Statistic
Postal / Zip Code	21755
Primary City	Jefferson
State / Province	MD
County	Frederick
Total Population	5,909
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	66.5 people/sq mi
Timezone	America/New_York

How 21755 Compares

Metric	ZIP 21755	Frederick County	MD State Average
Population	5,909	300,100	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	66.5 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 21718	Burkittsville	3.8 mi	134	N/A
Zip 21716	Brunswick	4.3 mi	7,200	N/A
Zip 21714	Braddock Heights	4.6 mi	95	N/A
Zip 21715	Brownsville	5.1 mi	20	N/A
Zip 21758	Knoxville	5.1 mi	4,409	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 →