| | Snohomish County | WA | 53061 | Everett, WA 21794 | Seattle-Tacoma-Bellevue,
WA 42660 | Seattle-Tacoma, WA 500 | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=SnohomishCounty+WA |
| | King County | WA | 53033 | Seattle-Bellevue-Kent, WA 42644 | Seattle-Tacoma-Bellevue,
WA 42660 | Seattle-Tacoma, WA 500 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=KingCounty+WA |
| | Pierce County | WA | 53053 | Tacoma-Lakewood, WA 45104 | Seattle-Tacoma-Bellevue,
WA 42660 | Seattle-Tacoma, WA 500 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=PierceCounty+WA |