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Zip Code 21921 — Elkton, MD

21921 is a ZIP Code associated with Elkton, MD, located within Cecil. The postal region supports an estimated population of 45,527 residents across Data Pending housing units, with a population density of 185.6 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.625680, -75.859040)

Data Metric	Local Statistic
Postal / Zip Code	21921
Primary City	Elkton
State / Province	MD
County	Cecil
Total Population	45,527
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	185.6 people/sq mi
Timezone	America/New_York

How 21921 Compares

Metric	ZIP 21921	Cecil County	MD State Average
Population	45,527	104,960	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	185.6 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 21920	Elk Mills	2.5 mi	1,413	N/A
Zip 21901	North East	6.0 mi	19,514	N/A
Zip 21914	Charlestown	7.5 mi	810	N/A
Zip 21915	Chesapeake City	8.6 mi	2,471	N/A
Zip 21903	Perryville	10.5 mi	5,692	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 →