Boonsboro MD ZIP Code
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Boonsboro city is located in Maryland State, Washington County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Boonsboro MD zip code by its streets and block numbers if we have some of the Boonsboro streets loaded in our website
Boonsboro Area Code is 301 and Time Zone is Eastern (GMT -05:00).
Boonsboro Zip Code - Maryland
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Boonsboro City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Boonsboro ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Boonsboro, Maryland.
The Boonsboro Zip Code is 21713.
If you want to send a mail to Boonsboro City, you should use the 21713 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Boonsboro 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 21713 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Boonsboro 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.