The numbers shown below appear as the first digits in South Dakota license plates. Using the codes you can determine the county that issued the license plate appearing on a passenger (non-commercial) vehicle.

1: Minnehaha (Sioux Falls) 2: Pennington (Rapid City) 3: Brown (Aberdeen) 4: Beadle (Huron) 5: Codington (Watertown) 6: Brookings (Brookings) 7: Yankton (Yankton) 8: Davison (Mitchell) 9: Lawrence (Deadwood) 10: Aurora (Plankinton) 11: Bennett (Martin) 12: Bon Homme (Tyndall) 13: Brule (Chamberlain) 14: Buffalo (Gann Valley) 15: Butte (Belle Fourche) 16: Campbell (Mound City) 17: Charles Mix (Lake Andres) 18: Clark (Clark) 19: Clay (Vermillion) 20: Corson (McIntosh) 21: Custer (Custer) 22: Day (Webster) 23: Deuel (Clear Lake) 24: Dewey (Timber Lake) 25: Douglas (Armour) 26: Edmunds (Ipswich) 27: Fall River (Hot Springs) 28: Faulk (Faulkton) 29: Grant (Milbank) 30: Gregory (Burke) 31: Haakon (Philip) 32: Hamlin (Hayti) 33: Hand (Miller) 34: Hanson (Alexandria)

35: Harding (Buffalo) 36: Hughes (Pierre) 37: Hutchinson (Olivet) 38: Hyde (Highmore) 39: Jackson (Kadoka) 40: Jerauld (Wessington Springs) 41: Jones (Murdo) 42: Kingsbury (De Smet) 43: Lake (Madison) 44: Lincoln (Canton) 45: Lyman (Kennebec) 46: McCook (Salem) 47: McPherson (Leola) 48: Marshall (Britton) 49: Meade (Sturgis) 50: Mellette (White River) 51: Miner (Howard) 52: Moody (Flandreau) 53: Perkins (Bison) 54: Potter (Gettysburg) 55: Roberts (Sisseton) 56: Sanborn (Woonsocket) 57: Spink (Redfield) 58: Stanley (Fort Pierre) 59: Sully (Onida) 60: Tripp (Winner) 61: Turner (Parker) 62: Union (Elk Point) 63: Walworth (Selby) 64: Ziebach (Dupree) 65: Shannon (Wounded Knee) 66: Washabaugh (unincorporated, portion of Jackson county) 67: Todd (Antelope)

Here is a photo I took in May, 2023 of the map posted on the wall of the Codington County Treasurer’s office while I was waiting to pay for my ham radio license plates:

Here is a link to an interactive map showing the South Dakota Driver License Exam Stations and County locations: