Deal Island MD ZIP Code
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Deal Island city is located in Maryland State, Somerset County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Deal Island MD zip code by its streets and block numbers if we have some of the Deal Island streets loaded in our website
Deal Island Area Code is 410 and Time Zone is Eastern (GMT -05:00).
Deal Island Zip Code - Maryland
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Deal Island City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Deal Island ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Deal Island, Maryland.
The Deal Island Zip Code is 21821.
If you want to send a mail to Deal Island City, you should use the 21821 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Deal Island ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons". A ZIP+4 code uses the basic 21821 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Deal Island city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in Maryland.