| Rank | County | Percentage White, Not Hispanic or Latino, Residents | 
                            
                                
                                    | 1 | Lincoln County, Washington | 92.1% | 
                            
                                
                                    | 2 | Garfield County, Washington | 92.0% | 
                            
                                
                                    | 3 | Asotin County, Washington | 92.0% | 
                            
                                
                                    | 4 | Wahkiakum County, Washington | 91.8% | 
                            
                                
                                    | 5 | San Juan County, Washington | 89.8% | 
                            
                                
                                    | 6 | Columbia County, Washington | 89.5% | 
                            
                                
                                    | 7 | Pend Oreille County, Washington | 89.3% | 
                            
                                
                                    | 8 | Jefferson County, Washington | 89.0% | 
                            
                                
                                    | 9 | Skamania County, Washington | 88.8% | 
                            
                                
                                    | 10 | Stevens County, Washington | 87.6% | 
                            
                                
                                    | 11 | Spokane County, Washington | 86.3% | 
                            
                                
                                    | 12 | Cowlitz County, Washington | 85.3% | 
                            
                                
                                    | 13 | Lewis County, Washington | 85.3% | 
                            
                                
                                    | 14 | Kittitas County, Washington | 85.1% | 
                            
                                
                                    | 15 | Clallam County, Washington | 84.1% | 
                            
                                
                                    | 16 | Pacific County, Washington | 83.5% | 
                            
                                
                                    | 17 | Klickitat County, Washington | 82.7% | 
                            
                                
                                    | 18 | Mason County, Washington | 82.4% | 
                            
                                
                                    | 19 | Island County, Washington | 81.9% | 
                            
                                
                                    | 20 | Whatcom County, Washington | 81.0% | 
                            
                                
                                    | 21 | Clark County, Washington | 81.0% | 
                            
                                
                                    | 22 | Whitman County, Washington | 80.9% | 
                            
                                
                                    | 23 | Grays Harbor County, Washington | 80.6% | 
                            
                                
                                    | 24 | Kitsap County, Washington | 78.3% | 
                            
                                
                                    | 25 | Thurston County, Washington | 77.8% | 
                            
                                
                                    | 26 | Skagit County, Washington | 76.2% | 
                            
                                
                                    | 27 | Ferry County, Washington | 74.2% | 
                            
                                
                                    | 28 | Benton County, Washington | 73.8% | 
                            
                                
                                    | 29 | Walla Walla County, Washington | 73.4% | 
                            
                                
                                    | 30 | Snohomish County, Washington | 73.4% | 
                            
                                
                                    | 31 | Chelan County, Washington | 69.6% | 
                            
                                
                                    | 32 | Pierce County, Washington | 69.5% | 
                            
                                
                                    | 33 | Okanogan County, Washington | 67.5% | 
                            
                                
                                    | 34 | Douglas County, Washington | 66.8% | 
                            
                                
                                    | 35 | King County, Washington | 63.8% | 
                            
                                
                                    | 36 | Grant County, Washington | 56.5% | 
                            
                                
                                    | 37 | Yakima County, Washington | 46.4% | 
                            
                                
                                    | 38 | Franklin County, Washington | 43.1% | 
                            
                                
                                    | 39 | Adams County, Washington | 36.8% |