57751 Frequently Asked Questions

A: ZIP Code 57751 is Located in Keystone South Dakota. Portions of 57751 are also in Mount Rushmore, East Custer, Keystone (town), West Pennington.

A: ZIP Code 57751 is Located Primarily in Pennington County South Dakota with Portions in Custer County.

A: The Current Sales Tax in ZIP Code 57751 is 6.2%

A: The Area Code for 57751 is 605.

A: ZIP Code 57751 is in South Dakota State House of Representatives District 30.

A: ZIP Code 57751 is in South Dakota State Senate District 30.

A: The 2022 population of ZIP Code 57751 is 947. The population growth rate in 57751 is 14.37%. The population density of 57751 is 16.

A: The majority race/ethnicity of people residing in 57751 is White (87.05%).

A: The median household income in 57751 is $75,893 (2021) and the average adjusted income is $459,430 (2021).