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 57762 Nisland Butte County 605
SD 57763 Oelrichs Fall River County 308, 605
SD 57764 Oglala Oglala Lakota County 605
SD 57766 Oral Fall River County 605
SD 57767 Owanka Pennington County 605
SD 57769 Piedmont Meade County 605
SD 57770 Pine Ridge Oglala Lakota County 308, 605
SD 57772 Porcupine Oglala Lakota County 605
SD 57773 Pringle Custer County 605
SD 57775 Quinn Pennington 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.