The graph below ranks each Washington County by total of Mixed Race residents according to the 2012 census estimates.
Washington total of Mixed Race population by county
| County | Mixed Race Population |
| King |  94,356 |
| Pierce | 53,596 |
| Snohomish | 31,517 |
| Spokane | 17,610 |
| Clark | 16,639 |
| Kitsap | 14,004 |
| Thurston | 13,191 |
| Whatcom | 7,173 |
| Yakima | 6,900 |
| Benton | 4,924 |
| Island | 3,488 |
| Skagit | 3,424 |
| Cowlitz | 3,360 |
| Clallam | 2,660 |
| Grays Harbor | 2,511 |
| Mason | 2,309 |
| Lewis | 2,266 |
| Grant | 2,014 |
| Franklin | 1,973 |
| Whitman | 1,767 |
| Chelan | 1,546 |
| Walla Walla | 1,426 |
| Stevens | 1,395 |
| Kittitas | 1,208 |
| Okanogan | 1,196 |
| Jefferson | 985 |
| Douglas | 865 |
| Pacific | 741 |
| Klickitat | 598 |
| Asotin | 481 |
| Pend Oreille | 376 |
| Ferry | 370 |
| San Juan | 363 |
| Skamania | 336 |
| Lincoln | 261 |
| Adams | 246 |
| Wahkiakum | 116 |
| Columbia | 84 |
| Garfield | 47 |