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Gunpowder, MD ZIP code

The ZIP code for Gunpowder, Maryland is 21010. It is in Harford County.

Population in these ZIPs
239
Avg. median income
$99,400population-weighted
Typical home value
—population-weighted
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ZIP codes within 10 miles

Gunpowder, MD ZIP code list

Gunpowder, MD ZIP codes
ZIP codePopulationMedian incomeTypical home value
21010239$99,410—

Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology

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Frequently asked questions

What is the ZIP code for Gunpowder, MD?

The ZIP code for Gunpowder, MD is 21010.

What county is Gunpowder, Maryland in?

Gunpowder ZIP codes are in Harford County.