Hennessey OK ZIP Code
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Hennessey city is located in Oklahoma State, Kingfisher County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Hennessey OK zip code by its streets and block numbers if we have some of the Hennessey streets loaded in our website
Hennessey Area Code is 405 and Time Zone is Central (GMT -06:00).
Hennessey Zip Code - Oklahoma
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Hennessey City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Hennessey ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Hennessey, Oklahoma.
The Hennessey Zip Code is 73742.
If you want to send a mail to Hennessey City, you should use the 73742 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Hennessey 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 73742 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Hennessey 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.