Potosi MO ZIP Code
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Potosi city is located in Missouri State, Washington County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Potosi MO zip code by its streets and block numbers if we have some of the Potosi streets loaded in our website
Potosi Area Code is 573 and Time Zone is Central (GMT -06:00).
Potosi Zip Code - Missouri
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Potosi City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Potosi ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Potosi, Missouri.
The Potosi Zip Code is 63664.
If you want to send a mail to Potosi City, you should use the 63664 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Potosi 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 63664 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Potosi 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.