Charlestown MD ZIP Code
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Charlestown city is located in Maryland State, Cecil County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Charlestown MD zip code by its streets and block numbers if we have some of the Charlestown streets loaded in our website
Charlestown Area Code is 443/410 and Time Zone is Eastern (GMT -05:00).
Charlestown Zip Code - Maryland
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Charlestown City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Charlestown ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Charlestown, Maryland.
The Charlestown Zip Code is 21914.
If you want to send a mail to Charlestown City, you should use the 21914 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Charlestown 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 21914 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Charlestown 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.