Jefferson City MT ZIP Code
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Jefferson City city is located in Montana State, Jefferson County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Jefferson City MT zip code by its streets and block numbers if we have some of the Jefferson City streets loaded in our website
Jefferson City Area Code is 406 and Time Zone is Mountain (GMT -07:00).
Jefferson City Zip Code - Montana
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Jefferson City City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Jefferson City ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Jefferson City, Montana.
The Jefferson City Zip Code is 59638.
If you want to send a mail to Jefferson City City, you should use the 59638 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Jefferson City 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 59638 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Jefferson City 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.