| Rank | County | Average People Per Household | 
                            
                                
                                    | 1 | Shannon County, South Dakota | 4.8 | 
                            
                                
                                    | 2 | Todd County, South Dakota | 3.7 | 
                            
                                
                                    | 3 | Corson County, South Dakota | 3.5 | 
                            
                                
                                    | 4 | Buffalo County, South Dakota | 3.5 | 
                            
                                
                                    | 5 | Ziebach County, South Dakota | 3.5 | 
                            
                                
                                    | 6 | Mellette County, South Dakota | 3.2 | 
                            
                                
                                    | 7 | Jackson County, South Dakota | 3.1 | 
                            
                                
                                    | 8 | Dewey County, South Dakota | 3.0 | 
                            
                                
                                    | 9 | Bennett County, South Dakota | 3.0 | 
                            
                                
                                    | 10 | Hanson County, South Dakota | 2.9 | 
                            
                                
                                    | 11 | Hamlin County, South Dakota | 2.8 | 
                            
                                
                                    | 12 | Charles Mix County, South Dakota | 2.7 | 
                            
                                
                                    | 13 | Roberts County, South Dakota | 2.7 | 
                            
                                
                                    | 14 | Marshall County, South Dakota | 2.6 | 
                            
                                
                                    | 15 | Jones County, South Dakota | 2.6 | 
                            
                                
                                    | 16 | Lincoln County, South Dakota | 2.6 | 
                            
                                
                                    | 17 | Lyman County, South Dakota | 2.6 | 
                            
                                
                                    | 18 | Clark County, South Dakota | 2.5 | 
                            
                                
                                    | 19 | Stanley County, South Dakota | 2.5 | 
                            
                                
                                    | 20 | Butte County, South Dakota | 2.5 | 
                            
                                
                                    | 21 | McCook County, South Dakota | 2.5 | 
                            
                                
                                    | 22 | Meade County, South Dakota | 2.5 | 
                            
                                
                                    | 23 | Minnehaha County, South Dakota | 2.5 | 
                            
                                
                                    | 24 | Aurora County, South Dakota | 2.5 | 
                            
                                
                                    | 25 | Harding County, South Dakota | 2.5 | 
                            
                                
                                    | 26 | Moody County, South Dakota | 2.5 | 
                            
                                
                                    | 27 | Union County, South Dakota | 2.4 | 
                            
                                
                                    | 28 | Brookings County, South Dakota | 2.4 | 
                            
                                
                                    | 29 | Faulk County, South Dakota | 2.4 | 
                            
                                
                                    | 30 | Turner County, South Dakota | 2.4 | 
                            
                                
                                    | 31 | Deuel County, South Dakota | 2.4 | 
                            
                                
                                    | 32 | Walworth County, South Dakota | 2.4 | 
                            
                                
                                    | 33 | Pennington County, South Dakota | 2.4 | 
                            
                                
                                    | 34 | Douglas County, South Dakota | 2.4 | 
                            
                                
                                    | 35 | Edmunds County, South Dakota | 2.4 | 
                            
                                
                                    | 36 | Codington County, South Dakota | 2.3 | 
                            
                                
                                    | 37 | Spink County, South Dakota | 2.3 | 
                            
                                
                                    | 38 | Yankton County, South Dakota | 2.3 | 
                            
                                
                                    | 39 | Hutchinson County, South Dakota | 2.3 | 
                            
                                
                                    | 40 | Lake County, South Dakota | 2.3 | 
                            
                                
                                    | 41 | Jerauld County, South Dakota | 2.3 | 
                            
                                
                                    | 42 | Hyde County, South Dakota | 2.3 | 
                            
                                
                                    | 43 | McPherson County, South Dakota | 2.3 | 
                            
                                
                                    | 44 | Brown County, South Dakota | 2.3 | 
                            
                                
                                    | 45 | Bon Homme County, South Dakota | 2.3 | 
                            
                                
                                    | 46 | Sully County, South Dakota | 2.3 | 
                            
                                
                                    | 47 | Beadle County, South Dakota | 2.3 | 
                            
                                
                                    | 48 | Sanborn County, South Dakota | 2.3 | 
                            
                                
                                    | 49 | Davison County, South Dakota | 2.3 | 
                            
                                
                                    | 50 | Hughes County, South Dakota | 2.3 | 
                            
                                
                                    | 51 | Clay County, South Dakota | 2.3 | 
                            
                                
                                    | 52 | Day County, South Dakota | 2.2 | 
                            
                                
                                    | 53 | Tripp County, South Dakota | 2.2 | 
                            
                                
                                    | 54 | Brule County, South Dakota | 2.2 | 
                            
                                
                                    | 55 | Potter County, South Dakota | 2.2 | 
                            
                                
                                    | 56 | Haakon County, South Dakota | 2.2 | 
                            
                                
                                    | 57 | Grant County, South Dakota | 2.2 | 
                            
                                
                                    | 58 | Campbell County, South Dakota | 2.2 | 
                            
                                
                                    | 59 | Kingsbury County, South Dakota | 2.1 | 
                            
                                
                                    | 60 | Perkins County, South Dakota | 2.1 | 
                            
                                
                                    | 61 | Hand County, South Dakota | 2.1 | 
                            
                                
                                    | 62 | Miner County, South Dakota | 2.1 | 
                            
                                
                                    | 63 | Gregory County, South Dakota | 2.1 | 
                            
                                
                                    | 64 | Lawrence County, South Dakota | 2.1 | 
                            
                                
                                    | 65 | Custer County, South Dakota | 2.1 | 
                            
                                
                                    | 66 | Fall River County, South Dakota | 2.1 |