| Rank | County | Employees of Private Non-Farm Establishments | 
                            
                                
                                    | 1 | King County, Washington | 1,030,931 | 
                            
                                
                                    | 2 | Pierce County, Washington | 220,454 | 
                            
                                
                                    | 3 | Snohomish County, Washington | 216,021 | 
                            
                                
                                    | 4 | Spokane County, Washington | 169,532 | 
                            
                                
                                    | 5 | Clark County, Washington | 107,452 | 
                            
                                
                                    | 6 | Whatcom County, Washington | 66,595 | 
                            
                                
                                    | 7 | Thurston County, Washington | 63,511 | 
                            
                                
                                    | 8 | Yakima County, Washington | 61,150 | 
                            
                                
                                    | 9 | Benton County, Washington | 59,670 | 
                            
                                
                                    | 10 | Kitsap County, Washington | 55,525 | 
                            
                                
                                    | 11 | Skagit County, Washington | 36,338 | 
                            
                                
                                    | 12 | Cowlitz County, Washington | 30,312 | 
                            
                                
                                    | 13 | Chelan County, Washington | 25,619 | 
                            
                                
                                    | 14 | Walla Walla County, Washington | 19,298 | 
                            
                                
                                    | 15 | Grant County, Washington | 19,089 | 
                            
                                
                                    | 16 | Lewis County, Washington | 18,256 | 
                            
                                
                                    | 17 | Clallam County, Washington | 17,230 | 
                            
                                
                                    | 18 | Franklin County, Washington | 17,098 | 
                            
                                
                                    | 19 | Grays Harbor County, Washington | 15,169 | 
                            
                                
                                    | 20 | Island County, Washington | 11,702 | 
                            
                                
                                    | 21 | Kittitas County, Washington | 9,731 | 
                            
                                
                                    | 22 | Mason County, Washington | 9,276 | 
                            
                                
                                    | 23 | Whitman County, Washington | 9,183 | 
                            
                                
                                    | 24 | Okanogan County, Washington | 7,920 | 
                            
                                
                                    | 25 | Stevens County, Washington | 6,830 | 
                            
                                
                                    | 26 | Douglas County, Washington | 6,196 | 
                            
                                
                                    | 27 | Jefferson County, Washington | 6,187 | 
                            
                                
                                    | 28 | Asotin County, Washington | 4,374 | 
                            
                                
                                    | 29 | Adams County, Washington | 4,340 | 
                            
                                
                                    | 30 | Pacific County, Washington | 3,867 | 
                            
                                
                                    | 31 | San Juan County, Washington | 3,862 | 
                            
                                
                                    | 32 | Klickitat County, Washington | 3,423 | 
                            
                                
                                    | 33 | Lincoln County, Washington | 1,582 | 
                            
                                
                                    | 34 | Pend Oreille County, Washington | 1,566 | 
                            
                                
                                    | 35 | Skamania County, Washington | 1,185 | 
                            
                                
                                    | 36 | Ferry County, Washington | 838 | 
                            
                                
                                    | 37 | Columbia County, Washington | 757 | 
                            
                                
                                    | 38 | Wahkiakum County, Washington | 609 | 
                            
                                
                                    | 39 | Garfield County, Washington | 334 |