There are 9 zip codes in Pennington County, South Dakota. The most populated is 57701, located in Rapid City. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
5770145,046Rapid City
5770234,985Rapid City
5770316,951Rapid City
577451,851Hill City
577901,076Wall
57751947Keystone
57775358Quinn
57725245Caputa
5778064Scenic

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