Seneca SD ZIP Code
Seneca city is located in South Dakota State, Faulk County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Seneca SD zip code by its streets and block numbers if we have some of the Seneca streets loaded in our website
Seneca Area Code is 605 and Time Zone is Central (GMT -06:00).
Seneca Zip Code - South Dakota
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Seneca City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Seneca ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Seneca, South Dakota.
The Seneca Zip Code is 57473.
If you want to send a mail to Seneca City, you should use the 57473 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Seneca 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 57473 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Seneca 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.