West Alton MO ZIP Code
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West Alton city is located in Missouri State, Saint Charles County and has a unique zip code assigned by the US Postal Service Office.
You can search for the West Alton MO zip code by its streets and block numbers if we have some of the West Alton streets loaded in our website
West Alton Area Code is 636 and Time Zone is Central (GMT -06:00).
West Alton Zip Code - Missouri
The US ZIP Code basic format consists of five decimal numerical digits assigned to the West Alton City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the West Alton ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in West Alton, Missouri.
The West Alton Zip Code is 63386.
If you want to send a mail to West Alton City, you should use the 63386 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded West Alton 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 63386 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a West Alton 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 Missouri.