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.

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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 57001 Alcester Union County 605
SD 57002 Aurora Brookings County 605
SD 57003 Baltic Minnehaha County 605
SD 57004 Beresford Union County 605
SD 57005 Brandon Minnehaha County 605, 712
SD 57006 Brookings Brookings County 605
SD 57007 Brookings Brookings County 605
SD 57010 Burbank Clay County 402, 531, 605
SD 57012 Canistota McCook County 605
SD 57013 Canton Lincoln County 605, 712
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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.