Oldham SD ZIP Code
Oldham city is located in South Dakota State, Kingsbury County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Oldham SD zip code by its streets and block numbers if we have some of the Oldham streets loaded in our website
Oldham Area Code is 605 and Time Zone is Central (GMT -06:00).
Oldham Zip Code - South Dakota
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Oldham City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Oldham ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Oldham, South Dakota.
The Oldham Zip Code is 57051.
If you want to send a mail to Oldham City, you should use the 57051 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Oldham 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 57051 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Oldham 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.