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/DEAL-ISLAND

Deal Island ZIP code, Maryland

The ZIP code for Deal Island, MD is 21821, and its area codes are 667 and 410.

USPS city name
1 ZIP code
Population
341
Area codes
667, 410

Deal Island in numbers

About 341 people live in Deal Island, in 189 households. The median household income is $22,404 a year, 78% below the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $134,800 (68% below the Maryland median), and median gross rent is $1,615 a month. The median age is 61.8; 8.0% of adults 25 and over hold a bachelor's degree or higher (43.4% across Maryland).

Population341Deal Island341
Households189Deal Island189
Median age61.8Deal Island61.8Maryland39.4US 38.9
Median household income$22,404Deal Island$22,404Maryland$103,678US $80,734
Median home value$134,800Deal Island$134,800Maryland$419,900US $332,700
Median gross rent$1,615Deal Island$1,615Maryland$1,705US $1,413
Bachelor's degree or higher8.0%Deal Island8.0%Maryland43.4%US 35.7%
Population density113 / sq miDeal Island113 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Deal Island CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Deal Island

ZIP codes with the USPS city name Deal Island
ZIP City Type Population Median income Median home
21821 Deal Island , MD Standard 797 $60,341 $188,200

Map of Deal Island ZIP codes

21821

The ZIP codes of Deal Island, 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 Deal Island

The nearest larger towns are Fairmount (440 people, 7.1 mi), Nanticoke (434 people, 8.3 mi) and Mount Vernon (1,067 people, 10 mi).

Towns near Deal Island
TownPopulationDistance
Princess Anne 3,569 13.7 mi
Fruitland 5,801 20.6 mi
Pocomoke City 4,405 21.6 mi
Salisbury 33,285 24.6 mi
Lexington Park 13,252 28.1 mi
Delmar 4,261 28.7 mi
Cambridge 13,152 28.7 mi
Chesapeake Ranch Estates 9,241 29.5 mi
Drum Point 3,589 29.6 mi
Snow Hill 2,659 29.9 mi

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

Cite this page

zipcodes.pro. “Deal Island, MD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/md/deal-island

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