Union Bridge MD ZIP Code
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Union Bridge city is located in Maryland State, Carroll County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Union Bridge MD zip code by its streets and block numbers if we have some of the Union Bridge streets loaded in our website
Union Bridge Area Code is 443/410 and Time Zone is Eastern (GMT -05:00).
Union Bridge Zip Code - Maryland
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Union Bridge City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Union Bridge ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Union Bridge, Maryland.
The Union Bridge Zip Code is 21791.
If you want to send a mail to Union Bridge City, you should use the 21791 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Union Bridge 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 21791 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Union Bridge 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.