U.S. postal lookup

U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

42,735 verified records
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State directory

South Dakota ZIP Codes

Complete postal directory, details, and geographic map for the State of South Dakota.

State ZIP Code City County Area Codes
SD 57079 Yankton Yankton County 605
SD 57101 Sioux Falls Minnehaha County 605
SD 57103 Sioux Falls Minnehaha County 605
SD 57104 Sioux Falls Minnehaha County 605
SD 57105 Sioux Falls Minnehaha County 605
SD 57106 Sioux Falls Minnehaha County 605
SD 57107 Sioux Falls Minnehaha County 605
SD 57108 Sioux Falls Lincoln County 605, 712
SD 57109 Sioux Falls Minnehaha County 605
SD 57110 Sioux Falls Minnehaha County 605
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Geographic Map of South Dakota

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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.