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Zip Code 21220 — Middle River, MD

21220 is a ZIP Code associated with Middle River, MD, located within Baltimore. The postal region supports an estimated population of 42,824 residents across Data Pending housing units, with a population density of 780.7 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.345000, -76.396600)

Data Metric	Local Statistic
Postal / Zip Code	21220
Primary City	Middle River
State / Province	MD
County	Baltimore
Total Population	42,824
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	780.7 people/sq mi
Timezone	America/New_York

How 21220 Compares

Metric	ZIP 21220	Baltimore County	MD State Average
Population	42,824	1,414,366	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	780.7 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 21162	White Marsh	3.2 mi	4,639	N/A
Zip 21221	Essex	4.2 mi	43,487	N/A
Zip 21128	Perry Hall	4.9 mi	15,501	N/A
Zip 21237	Rosedale	5.2 mi	31,425	N/A
Zip 21236	Nottingham	5.6 mi	39,514	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 →