Oakland MD ZIP Code
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Oakland city is located in Maryland State, Garrett County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Oakland MD zip code by its streets and block numbers if we have some of the Oakland streets loaded in our website
Oakland Area Code is 301/240 and Time Zone is Eastern (GMT -05:00).
Oakland Zip Code - Maryland
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Oakland City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Oakland ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Oakland, Maryland.
The Oakland Zip Code is 21550.
If you want to send a mail to Oakland City, you should use the 21550 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Oakland 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 21550 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Oakland 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.