| Rank | County | Private Non-Farm Establishments | 
                            
                                
                                    | 1 | King County, Washington | 62,569 | 
                            
                                
                                    | 2 | Snohomish County, Washington | 16,674 | 
                            
                                
                                    | 3 | Pierce County, Washington | 16,370 | 
                            
                                
                                    | 4 | Spokane County, Washington | 12,151 | 
                            
                                
                                    | 5 | Clark County, Washington | 9,303 | 
                            
                                
                                    | 6 | Whatcom County, Washington | 6,117 | 
                            
                                
                                    | 7 | Thurston County, Washington | 5,733 | 
                            
                                
                                    | 8 | Kitsap County, Washington | 5,541 | 
                            
                                
                                    | 9 | Yakima County, Washington | 4,583 | 
                            
                                
                                    | 10 | Benton County, Washington | 3,919 | 
                            
                                
                                    | 11 | Skagit County, Washington | 3,358 | 
                            
                                
                                    | 12 | Chelan County, Washington | 2,372 | 
                            
                                
                                    | 13 | Cowlitz County, Washington | 2,149 | 
                            
                                
                                    | 14 | Clallam County, Washington | 2,118 | 
                            
                                
                                    | 15 | Lewis County, Washington | 1,798 | 
                            
                                
                                    | 16 | Grant County, Washington | 1,717 | 
                            
                                
                                    | 17 | Grays Harbor County, Washington | 1,709 | 
                            
                                
                                    | 18 | Island County, Washington | 1,696 | 
                            
                                
                                    | 19 | Walla Walla County, Washington | 1,370 | 
                            
                                
                                    | 20 | Franklin County, Washington | 1,358 | 
                            
                                
                                    | 21 | Okanogan County, Washington | 1,133 | 
                            
                                
                                    | 22 | Kittitas County, Washington | 1,114 | 
                            
                                
                                    | 23 | Jefferson County, Washington | 999 | 
                            
                                
                                    | 24 | Mason County, Washington | 970 | 
                            
                                
                                    | 25 | San Juan County, Washington | 938 | 
                            
                                
                                    | 26 | Stevens County, Washington | 883 | 
                            
                                
                                    | 27 | Whitman County, Washington | 814 | 
                            
                                
                                    | 28 | Douglas County, Washington | 672 | 
                            
                                
                                    | 29 | Pacific County, Washington | 593 | 
                            
                                
                                    | 30 | Klickitat County, Washington | 528 | 
                            
                                
                                    | 31 | Asotin County, Washington | 432 | 
                            
                                
                                    | 32 | Adams County, Washington | 359 | 
                            
                                
                                    | 33 | Lincoln County, Washington | 247 | 
                            
                                
                                    | 34 | Pend Oreille County, Washington | 218 | 
                            
                                
                                    | 35 | Skamania County, Washington | 177 | 
                            
                                
                                    | 36 | Ferry County, Washington | 132 | 
                            
                                
                                    | 37 | Columbia County, Washington | 129 | 
                            
                                
                                    | 38 | Wahkiakum County, Washington | 91 | 
                            
                                
                                    | 39 | Garfield County, Washington | 45 |