Keldron SD ZIP Code
Keldron city is located in South Dakota State, Corson County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Keldron SD zip code by its streets and block numbers if we have some of the Keldron streets loaded in our website
Keldron Area Code is 605 and Time Zone is Mountain (GMT -07:00).
Keldron Zip Code - South Dakota
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Keldron City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Keldron ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Keldron, South Dakota.
The Keldron Zip Code is 57634.
If you want to send a mail to Keldron City, you should use the 57634 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Keldron 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 57634 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Keldron 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.