Start with the answer
Heat Treating Equipment Setters, Operators, and Tenders, Metal and Plastic pay in Oklahoma and Washington
The May 2025 BLS OEWS median for Heat Treating Equipment Setters, Operators, and Tenders, Metal and Plastic is $51,680 per year in Oklahoma. It is $61,990 per year in Washington. Oklahoma is 16.6% below Washington on the published median.
Both rows use SOC 51-4191 and the same annual wage metric. Median means the middle of each area's published wage spread. It is not one worker's pay. The larger median is not proof that one place gives a better job or a better result. It is one wage fact from one source period.
BLS lists 120 wage and salary jobs in Oklahoma and 140 in Washington. Those are survey job counts, not open posts. Read pay, job scale, local share, and price level as separate facts before you make a choice.