Blackwell OK ZIP Code
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Blackwell city is located in Oklahoma State, Kay County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Blackwell OK zip code by its streets and block numbers if we have some of the Blackwell streets loaded in our website
Blackwell Area Code is 580 and Time Zone is Central (GMT -06:00).
Blackwell Zip Code - Oklahoma
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Blackwell City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Blackwell ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Blackwell, Oklahoma.
The Blackwell Zip Code is 74631.
If you want to send a mail to Blackwell City, you should use the 74631 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Blackwell 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 74631 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Blackwell 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.