There are 6 zip codes in Harding County, South Dakota. The most populated is 57720, located in Buffalo. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
57720695Buffalo
57724238Camp Crook
57755130Ludlow
5765173Reva
5765013Ralph
577760Redig

Zip Codes in Harding County, South Dakota by Population (2024)