Black Hills and Badlands Region
Jones County, Mellette County, Todd County
Glacial Lakes and Prairies Region
Beadle County, Brookings County, Brown County, Clark County, Codington County, Day County, Deuel County, Faulk County, Grant County, Hamlin County, Hand County, Kingsbury County, Marshall County, Moody County, Roberts County, Spink County
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Great Lakes Region
Aurora County, Brule County, Buffalo County, Campbell County, Charles Mix County, Corson County, Davison County, Dewey County, Douglas County, Edmunds County, Gregory County, Hughes County, Hyde County, Jerauld County, Lyman County, McPherson County, Potter County, Sanborn County, Stanley County, Sully County, Tripp County, Walworth County
Rapid City Region
Bennett County, Butte County, Custer County, Fall River County, Haakon County, Harding County, Jackson County, Lawrence County, Meade County, Pennington County, Perkins County, Shannon County, Ziebach County
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Sioux Falls Region
Bon Homme County, Clay County, Hanson County, Hutchinson County, Lake County, Lincoln County, McCook County, Miner County, Minnehaha County, Turner County, Union County, Yankton County
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Regions in South Dakota:
(with names of Key Towns in each region)