Fairfield MT ZIP Code
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Fairfield city is located in Montana State, Teton County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Fairfield MT zip code by its streets and block numbers if we have some of the Fairfield streets loaded in our website
Fairfield Area Code is 406 and Time Zone is Mountain (GMT -07:00).
Fairfield Zip Code - Montana
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Fairfield City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Fairfield ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Fairfield, Montana.
The Fairfield Zip Code is 59436.
If you want to send a mail to Fairfield City, you should use the 59436 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Fairfield 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 59436 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Fairfield 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.