Akaska is a town in Walworth County, South Dakota, United States. The population was 77 at the 2020 census. The community name derives from a Sioux word meaning "uncertain". Akaska was founded in 1907 as a station stop on a branch line of the Minneapolis and St. Louis Railway built that year between Conde and LeBeau, South Dakota. Railway servic…Akaska is a town in Walworth County, South Dakota, United States. The population was 77 at the 2020 census. The community name derives from a Sioux word meaning "uncertain". Akaska was founded in 1907 as a station stop on a branch line of the Minneapolis and St. Louis Railway built that year between Conde and LeBeau, South Dakota. Railway service to Akaska ended in 1940.