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Zip Code 21204 — Towson, MD

21204 is a ZIP Code associated with Towson, MD, located within Baltimore. The postal region supports an estimated population of 19,845 residents across Data Pending housing units, with a population density of 1,223.6 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.403530, -76.630240)

Data Metric	Local Statistic
Postal / Zip Code	21204
Primary City	Towson
State / Province	MD
County	Baltimore
Total Population	19,845
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	1,223.6 people/sq mi
Timezone	America/New_York

How 21204 Compares

Metric	ZIP 21204	Baltimore County	MD State Average
Population	19,845	1,414,366	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	1,223.6 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 21252	Towson	1.2 mi	4,865	N/A
Zip 21285	Towson	1.3 mi	3	N/A
Zip 21093	Lutherville Timonium	2.5 mi	39,100	N/A
Zip 21212	Baltimore	2.6 mi	33,974	N/A
Zip 21209	Baltimore	2.9 mi	30,126	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 →