Great Falls MT ZIP Code
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Great Falls city is located in Montana State, Cascade County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Great Falls MT zip code by its streets and block numbers if we have some of the Great Falls streets loaded in our website
Great Falls Area Code is 406 and Time Zone is Mountain (GMT -07:00).
Great Falls Zip Code - Montana
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Great Falls City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Great Falls ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Great Falls, Montana.
The Great Falls Zip Code is 59401, 59403, 59404, 59405, 59406.
If you want to send a mail to Great Falls City, you should use the 59401, 59403, 59404, 59405, 59406 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Great Falls 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 59401, 59403, 59404, 59405, 59406 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Great Falls 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.