South Sioux City NE ZIP Code
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South Sioux City city is located in Nebraska State, Dakota County and has a unique zip code assigned by the US Postal Service Office.
You can search for the South Sioux City NE zip code by its streets and block numbers if we have some of the South Sioux City streets loaded in our website
South Sioux City Area Code is 402 and Time Zone is Central (GMT -06:00).
South Sioux City Zip Code - Nebraska
The US ZIP Code basic format consists of five decimal numerical digits assigned to the South Sioux City City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the South Sioux City ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in South Sioux City, Nebraska.
The South Sioux City Zip Code is 68776.
If you want to send a mail to South Sioux City City, you should use the 68776 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded South Sioux City 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 68776 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a South Sioux City 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 Nebraska.