Saint Charles MO ZIP Code
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Saint Charles 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 Saint Charles MO zip code by its streets and block numbers if we have some of the Saint Charles streets loaded in our website
Saint Charles Area Code is 636 and Time Zone is Central (GMT -06:00).
Saint Charles Zip Code - Missouri
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Saint Charles City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Saint Charles ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Saint Charles, Missouri.
The Saint Charles Zip Code is 63301, 63302, 63303, 63304.
If you want to send a mail to Saint Charles City, you should use the 63301, 63302, 63303, 63304 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Saint Charles 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 63301, 63302, 63303, 63304 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Saint Charles 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.