Mills WY ZIP Code
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Mills city is located in Wyoming State, Natrona County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Mills WY zip code by its streets and block numbers if we have some of the Mills streets loaded in our website
Mills Area Code is 307 and Time Zone is Mountain (GMT -07:00).
Mills Zip Code - Wyoming
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Mills City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Mills ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Mills, Wyoming.
The Mills Zip Code is 82644.
If you want to send a mail to Mills City, you should use the 82644 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Mills 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 82644 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Mills 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 Wyoming.