Primary Metal Manufacturing in Washington
NAICS 331 · WA
Washington is home to Primary Metal Manufacturing, an industry with a location quotient of 0.57 according to the Bureau of Labor Statistics in 2024. Listed in the register are 140 facilities in 49 cities across Washington. Kaiser Aluminum - Trentwood in Spokane Valley had 899 employees in 2025.
SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE
Map, cities and product lines
Plants in Washington4 FACILITIES
| Facility | City | Employees | Status |
|---|---|---|---|
| Alcoa Wenatchee LLC | Malaga | 1–19 | LIKELY ACTIVE |
| Kb Alloys INC | Malaga | — | LIKELY ACTIVE |
| US Castings LLC | Entiat | — | UNVERIFIED |
| Chelan Quality Welding, LLC | Cashmere | — | UNVERIFIED |
All primary metal manufacturing nationwide · All manufacturing in Washington