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 57730 Custer Custer County 605
SD 57732 Deadwood Lawrence County 605
SD 57735 Edgemont Fall River County 307, 308, 605
SD 57737 Enning Meade County 605
SD 57738 Fairburn Custer County 605
SD 57741 Fort Meade Meade County 605
SD 57744 Hermosa Custer County 605
SD 57745 Hill City Pennington County 307, 605
SD 57747 Hot Springs Fall River County 605
SD 57748 Howes Ziebach 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.