Gann Valley SD ZIP Code
Gann Valley city is located in South Dakota State, Buffalo County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Gann Valley SD zip code by its streets and block numbers if we have some of the Gann Valley streets loaded in our website
Gann Valley Area Code is 605 and Time Zone is Central (GMT -06:00).
Gann Valley Zip Code - South Dakota
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Gann Valley City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Gann Valley ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Gann Valley, South Dakota.
The Gann Valley Zip Code is 57341.
If you want to send a mail to Gann Valley City, you should use the 57341 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Gann Valley 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 57341 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Gann Valley 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 South Dakota.