Big Sandy MT ZIP Code
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Big Sandy city is located in Montana State, Chouteau County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Big Sandy MT zip code by its streets and block numbers if we have some of the Big Sandy streets loaded in our website
Big Sandy Area Code is 406 and Time Zone is Mountain (GMT -07:00).
Big Sandy Zip Code - Montana
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Big Sandy City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Big Sandy ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Big Sandy, Montana.
The Big Sandy Zip Code is 59520.
If you want to send a mail to Big Sandy City, you should use the 59520 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Big Sandy 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 59520 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Big Sandy 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 Montana.