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Zip Code 21010 — Gunpowder, MD

21010 is a ZIP Code associated with Gunpowder, MD, located within Harford. The postal region supports an estimated population of 239 residents across Data Pending housing units, with a population density of 12.7 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.389530, -76.298510)

Data Metric	Local Statistic
Postal / Zip Code	21010
Primary City	Gunpowder
State / Province	MD
County	Harford
Total Population	239
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	12.7 people/sq mi
Timezone	America/New_York

How 21010 Compares

Metric	ZIP 21010	Harford County	MD State Average
Population	239	262,768	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	12.7 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 21040	Edgewood	2.8 mi	24,960	N/A
Zip 21085	Joppa	4.9 mi	17,307	N/A
Zip 21162	White Marsh	5.5 mi	4,639	N/A
Zip 21009	Abingdon	5.6 mi	33,679	N/A
Zip 21220	Middle River	6.1 mi	42,824	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 →