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	57350	Huron	Beadle County	`605`
SD	57353	Iroquois	Kingsbury County	`605`
SD	57354	Kaylor	Hutchinson County	`605`
SD	57355	Kimball	Brule County	`605`
SD	57356	Lake Andes	Charles Mix County	`605`
SD	57358	Lane	Jerauld County	`605`
SD	57359	Letcher	Sanborn County	`605`
SD	57361	Marty	Charles Mix County	`605`
SD	57362	Miller	Hand County	`605`
SD	57363	Mount Vernon	Davison 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.