Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/MD/GUNPOWDER

Gunpowder ZIP code, Maryland

The ZIP code for Gunpowder, MD is 21010, and its area codes are 443, 410 and 667.

USPS city name
1 ZIP code
Population
239
Area codes
443, 410, 667

NANPA lists no telephone rate centre for Gunpowder itself, so these are the area codes of the nearest one, Edgewood (2.7 miles). A town on an area-code boundary can differ from its neighbour.

Gunpowder in numbers

About 239 people live in Gunpowder, in 55 households. The median household income is $99,410 a year, 4% below the Maryland median of $103,678 (US: $80,734).

Population239Gunpowder239
Households55Gunpowder55
Median household income$99,410Gunpowder$99,410Maryland$103,678US $80,734

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the ZIP code addressed as Gunpowder. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Gunpowder

ZIP codes with the USPS city name Gunpowder
ZIP City Type Population Median income Median home
21010 Gunpowder , MD Standard 239 $99,410 —

Map of Gunpowder ZIP codes

21010

The ZIP codes of Gunpowder, MD, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Gunpowder

The nearest larger towns are Edgewood (24,922 people, 2.0 mi), Joppatowne (14,237 people, 3.6 mi) and Abingdon (5,019 people, 5.1 mi).

Towns near Gunpowder
TownPopulationDistance
Edgewood 24,922 2.0 mi
Joppatowne 14,237 3.6 mi
Abingdon 5,019 5.1 mi
Riverside 6,585 6.8 mi
Bowleys Quarters 7,006 7.2 mi
Honeygo 12,250 7.4 mi
Middle River 31,712 8.1 mi
Bel Air South 58,137 8.1 mi
Kingsville 4,687 8.5 mi
Pleasant Hills 3,836 8.5 mi
White Marsh 10,932 8.9 mi
Perry Hall 29,105 9.9 mi
Rossville 16,059 10.2 mi
Essex 40,580 10.2 mi

More nearby: every ZIP code in Harford County · Maryland ZIP codes

Cite this page

zipcodes.pro. “Gunpowder, MD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/md/gunpowder

Underlying data is public domain or openly licensed — sources, vintages and licences.