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 57057 Rutland Lake County 605
SD 57058 Salem McCook County 605
SD 57059 Scotland Bon Homme County 605
SD 57061 Sinai Brookings County 605
SD 57062 Springfield Bon Homme County 402, 531, 605
SD 57063 Tabor Bon Homme County 402, 531, 605
SD 57064 Tea Lincoln County 605
SD 57065 Trent Moody County 605
SD 57066 Tyndall Bon Homme County 605
SD 57067 Utica Yankton County 605
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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.