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/ALLEN

Allen ZIP code, Maryland

The ZIP code for Allen, MD is 21810, and its area codes are 410, 667 and 443.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
55
Area codes
410, 667, 443

NANPA lists no telephone rate centre for Allen itself, so these are the area codes of the nearest one, Salisbury (4.1 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Allen uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

ZIP codes addressed as Allen

ZIP codes with the USPS city name Allen
ZIP City Type Population Median income Median home
21810 Allen , MD Standard 55 — —

Other ZIP codes overlapping Allen

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

ZIP codes overlapping Allen
ZIP City Type Population Median income Median home
21822 Eden , MD Standard 2,926 $84,479 $277,700

Map of Allen ZIP codes

21810

The ZIP codes of Allen, 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 Allen

The nearest larger towns are Eden (1,053 people, 2.2 mi), Fruitland (5,801 people, 4.2 mi) and Whitehaven (80 people, 5.7 mi).

Towns near Allen
TownPopulationDistance
Fruitland 5,801 4.2 mi
Princess Anne 3,569 5.8 mi
Salisbury 33,285 8.4 mi
Delmar 4,261 12.8 mi
Pocomoke City 4,405 17.2 mi
Snow Hill 2,659 18.3 mi
Laurel, DE 4,152 20.6 mi
Hurlock 2,819 25.1 mi
Seaford, DE 8,485 25.8 mi
Berlin 5,232 26.1 mi
Cambridge 13,152 27.7 mi
Federalsburg 2,837 28.2 mi
Selbyville, DE 3,097 29.0 mi
Millsboro, DE 7,424 29.3 mi

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

Cite this page

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

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