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Zip Code 21030 — Cockeysville, MD

21030 is a ZIP Code associated with Cockeysville, MD, located within Baltimore. The postal region supports an estimated population of 25,827 residents across Data Pending housing units, with a population density of 414.6 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.490020, -76.665900)

Data Metric	Local Statistic
Postal / Zip Code	21030
Primary City	Cockeysville
State / Province	MD
County	Baltimore
Total Population	25,827
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	414.6 people/sq mi
Timezone	America/New_York

How 21030 Compares

Metric	ZIP 21030	Baltimore County	MD State Average
Population	25,827	1,414,366	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	414.6 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 21031	Hunt Valley	0.5 mi	26	N/A
Zip 21093	Lutherville Timonium	3.8 mi	39,100	N/A
Zip 21152	Sparks Glencoe	4.2 mi	6,459	N/A
Zip 21023	Butler	4.6 mi	66	N/A
Zip 21131	Phoenix	4.9 mi	7,141	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 →