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/CHARLTON

Charlton ZIP codes, Maryland

No ZIP code is named for Charlton, MD; addresses there use a neighbouring town's name. The ZIP code covering it is 21722. Its area codes are 240 and 301.

USPS city name
0 ZIP codes
Overlapping the city
1 more
Population
0
Area codes
240, 301

NANPA lists no telephone rate centre for Charlton itself, so these are the area codes of the nearest one, Clear Spring (0.0 miles). A town on an area-code boundary can differ from its neighbour.

ZIP codes covering Charlton

These ZIP codes cover part of Charlton but are addressed as somewhere else.

ZIP codes overlapping Charlton
ZIP City Type Population Median income Median home
21722 Clear Spring , MD Standard 6,721 $88,232 $312,500

Map of Charlton ZIP codes

The ZIP codes of Charlton, 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 Charlton

Towns near Charlton
TownPopulationDistance
Halfway 10,849 6.7 mi
St. James 4,824 8.8 mi
Maugansville 3,624 8.8 mi
Hagerstown 43,665 9.1 mi
Fountainhead-Orchard Hills 6,567 10.1 mi
Paramount-Long Meadow 2,569 11.2 mi
State Line, PA 3,111 11.3 mi
Robinwood 8,042 12.3 mi
Martinsburg, WV 18,904 13.0 mi
Greencastle, PA 4,222 14.0 mi
Boonsboro 3,809 14.9 mi
Smithsburg 3,115 16.8 mi
Waynesboro, PA 11,047 18.5 mi
Wayne Heights, PA 3,293 20.2 mi

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

Cite this page

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

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