Manderson-White Horse Creek is a census-designated place in East Oglala Lakota Unorganized Territory in Oglala Lakota County, South Dakota, United States. The population was 554 at the 2020 census. Oglala Lakota tribesman, Kicking Bear died here on May 28, 1904. He fought in several battles during the Black Hills War, including Battle of the Greasy Grass. His nephew, Felix Flying Hawk owned a ranch. According to the Federal Writers' Project, the origin of the name Manderson is obscure.