Graham OK ZIP Code
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Graham city is located in Oklahoma State, Carter County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Graham OK zip code by its streets and block numbers if we have some of the Graham streets loaded in our website
Graham Area Code is 580 and Time Zone is Central (GMT -06:00).
Graham Zip Code - Oklahoma
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Graham City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Graham ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Graham, Oklahoma.
The Graham Zip Code is 73437.
If you want to send a mail to Graham City, you should use the 73437 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Graham 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 73437 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Graham 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 Oklahoma.