Long Hollow, SD

Long Hollow is a census-designated place on the Lake Traverse Reservation in Roberts County, South Dakota, with 265 residents and 86 housing units in the 2020 Census. The Sisseton Wahpeton Oyate lists the district as Kaksize Hanska and describes the name as Longest Hollow, referring to hollows that stretch as far as Sica Hollow. Census geography covers 37,379,333 square meters of land and 306,586 square meters of water, with an interior point at 45.6834594 N, 97.1586488 W.