Green Grass, SD

Green Grass is a census-designated place in Dewey County, South Dakota, counted at 21 residents and 10 housing units in the 2020 Census. Its Census geography covers 21,064,465 square metres of land and no recorded water area. The U.S. Geological Survey’s South Dakota gazetteer lists Green Grass as a populated place and also records Green Grass Creek, Green Grass Cemetery, and Green Grass Church as Dewey County features. Those names tie the very small Census place to a creek, a cemetery, and a remembered community center.