How much do boilermakers make in Illinois in 2026?

The median boilermaker in Illinois earns $99,730 a year, which works out to roughly $47.95 an hour based on a standard 2,080-hour work year. That puts Illinois boilermakers well above many other skilled trades in the state and reflects the danger, physical demand, and specialized skill the work requires.

The pay spread across Illinois boilermakers is tighter than you might expect. Workers at the 25th percentile — those earlier in their careers or working in lower-demand regions — pull in $89,520 a year, or about $43.04 an hour. Workers at the 75th percentile earn $103,430, or roughly $49.73 an hour. The gap between the bottom quartile and the top quartile is about $13,910 annually. That compression suggests wages in this trade are driven more by certification level, shift type, and project scope than by employer-to-employer variation alone.

Boilermaker work in Illinois is concentrated around industrial facilities along the I-80 corridor, the Chicago metro, and the refinery and power-generation clusters in the northern and east-central parts of the state. Workers near these industrial hubs tend to see steadier hours and more opportunity for premium-pay shifts than those in rural southern Illinois, where project work is more sporadic.

Overtime and travel pay can push real annual earnings well past the BLS figures. BLS OEWS data captures base wages as of May of the survey year — it does not include overtime premiums, per diem, tool allowances, or travel pay. Boilermakers working outage cycles, plant shutdowns, or refinery turnarounds routinely log 50- to 60-hour weeks during peak periods. At time-and-a-half on a $47.95 base, every hour over 40 adds about $71.93. A worker logging 15 overtime hours a week for 10 weeks of outage season adds over $10,000 to their annual haul before any other premiums.

Experience is the clearest driver of where you land in the range. An apprentice completing the program and stepping into journeyman status in a busy industrial market can expect to move from the lower quartile toward the median within a few years. Boilermakers who pick up additional certifications — pressure vessel inspection, welding procedure qualifications, nondestructive testing endorsements — can negotiate above the median even before supervisor or foreman titles come into play.

Some workers in this trade may be covered by a collective bargaining agreement — check with your local for current rates.

The BLS figures here come from the May 2025 Occupational Employment and Wage Statistics survey, which is the most current available government wage data for this trade in Illinois. These are employer-reported figures across all sectors, covering both union and non-union employment, full-time workers, and all establishment sizes.

If you are weighing a boilermaker apprenticeship in Illinois, the pay floor alone — $43.04 an hour at the 25th percentile — is a strong starting point for a trade that requires no four-year degree. The ceiling, especially factoring in overtime and project premiums not captured in BLS data, extends meaningfully beyond the $103,430 figure at the 75th percentile.