Keystone South Dakota in Pennington county.
Keystone, South Dakota is located in Pennington county within the zipcode 57751. With a total of 0 golf courses in Keystone, it lies at an elevation of 3247 feet above sea level. The current date and time in Keystone South Dakota is March 30, 2017, 11:37 pm. Add a course for free by clicking here or contact us here.