"1873" . . . . . . . . . "South Dakota" . . . . . . . . . . . . . "4.8" . . "1.92954114220032E9" . . . . . . . . . . . . . "Walworth County, South Dakota" . . . . "Walworth County" . . . . . . . . . "Walworth" . . . . . . . . . . . "1.836301570228224E9" . "Walworth County, South Dakota" . . "1883" . . . . . . . . . . . . . . "9.3239571972096E7" . .