Gwynn Oak MD ZIP Code

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Gwynn Oak 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 Gwynn Oak MD zip code by its streets and block numbers if we have some of the Gwynn Oak streets loaded in our website

Gwynn Oak Area Code is 410/443 and Time Zone is Eastern (GMT -05:00).

Gwynn Oak Zip Code - Maryland

The US ZIP Code basic format consists of five decimal numerical digits assigned to the Gwynn Oak City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Gwynn Oak ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Gwynn Oak, Maryland.

The Gwynn Oak Zip Code is 21207.

If you want to send a mail to Gwynn Oak City, you should use the 21207 Zip Code.

In 1983, the U.S. Postal Service introduced an expanded Gwynn Oak 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 21207 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Gwynn Oak 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.

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What is the Gwynn Oak Zip Code?

The Gwynn Oak Zip Code in Maryland is 21207.

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Gwynn Oak, Maryland - US Zip Code

Gwynn Oak ZIP Code Lookup

21207 Zip Code File:
Zip Code: 21207,
City: Gwynn Oak
Gwynn Oak Area Code: 410/443
Gwynn Oak, MD - Time Zone: Eastern (GMT -05:00)
County: Baltimore
City Alias: Pikesville, Gwynn Oak, Woodlawn, Baltimore
State: Maryland
State Abb: MD

Maryland Zip+4 - Nearby Gwynn Oak Cities

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