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South Dakota Zip Codes



South Dakota South Dakota is a state located in the Midwestern region of the United States. It is named after the Lakota and Dakota Sioux American Indian tribes. South Dakota is the 17th most extensive, but the 5th least populous and the 5th least densely populated of the 50 United States. Once the southern portion of the Dakota Territory, South Dakota became a state on November 2, 1889. Pierre is the state capital and Sioux Falls, with a population of 153,000, is South Dakota s largest city.

State Zip Code City County Area Codes
SD 57776 Redig Harding County 605
SD 57779 Saint Onge Lawrence County 605
SD 57780 Scenic Pennington County 605
SD 57782 Smithwick Fall River County 605
SD 57783 Spearfish Lawrence County 307, 605
SD 57785 Sturgis Meade County 605
SD 57787 Union Center Meade County 605
SD 57788 Vale Butte County 605
SD 57790 Wall Pennington County 605
SD 57791 Wasta Pennington County 605
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Map of South Dakota

ZIP codes are a system of postal codes used by the United States Postal Service (USPS) since 1963. The term ZIP, an acronym for Zone Improvement Plan, is properly written in capital letters and was chosen to suggest that the mail travels more efficiently, and therefore more quickly, when senders use the code in the postal address. The basic format consists of five decimal numerical digits. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the ZIP code, a hyphen, and four more digits that determine a more precise location than the ZIP code alone. The term ZIP code was originally registered as a servicemark (a type of trademark) by the U.S. Postal Service, but its registration has since expired.

ZIP codes designate only delivery points within the United States and its dependencies, as well as locations of its armed forces. There are no ZIP codes reserved for designating mail bound for foreign destinations (with the exception of U.S. military units stationed outside of the United States), and therefore, international outbound mail should not include a ZIP code in the delivery address. The last line of a foreign address must only show the name of the country of destination.

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