Saint Louis MI ZIP Code
Saint Louis city is located in Michigan State, Gratiot County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Saint Louis MI zip code by its streets and block numbers if we have some of the Saint Louis streets loaded in our website
Saint Louis Area Code is 989 and Time Zone is Eastern (GMT -05:00).
Saint Louis Zip Code - Michigan
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Saint Louis City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Saint Louis ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Saint Louis, Michigan.
The Saint Louis Zip Code is 48880.
If you want to send a mail to Saint Louis City, you should use the 48880 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Saint Louis 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 48880 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Saint Louis 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 Michigan.