Calvin OK ZIP Code
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Calvin city is located in Oklahoma State, Hughes County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Calvin OK zip code by its streets and block numbers if we have some of the Calvin streets loaded in our website
Calvin Area Code is 405/580 and Time Zone is Central (GMT -06:00).
Calvin Zip Code - Oklahoma
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Calvin City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Calvin ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Calvin, Oklahoma.
The Calvin Zip Code is 74531.
If you want to send a mail to Calvin City, you should use the 74531 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Calvin 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 74531 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Calvin 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.