Baldwin MD ZIP Code
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Baldwin city is located in Maryland State, Baltimore County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Baldwin MD zip code by its streets and block numbers if we have some of the Baldwin streets loaded in our website
Baldwin Area Code is 410/443 and Time Zone is Eastern (GMT -05:00).
Baldwin Zip Code - Maryland
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Baldwin City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Baldwin ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Baldwin, Maryland.
The Baldwin Zip Code is 21013.
If you want to send a mail to Baldwin City, you should use the 21013 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Baldwin 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 21013 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Baldwin 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.