Plumbing, Heating, and Air-Conditioning Contractors in Illinois

Plumbing, Heating, and Air-Conditioning Contractors (NAICS 238220) in Illinois reports 41,112 workers across 4,070 establishments, with $3.5B of aggregate annual payroll flowing through Census CBP 2023 filings. That represents 3.4% of national employment for this industry, a concentration ratio that tells you whether Illinois is a primary labor market for this NAICS code or a smaller satellite. A share above 5% signals a meaningful regional cluster; below 1% usually means the state is not a structural fit for this industry at scale. Illinois accounts for 3.7% of the national Plumbing, Heating, and Air-Conditioning Contractors establishment count (4,070 of 111,207), according to Census County Business Patterns.

Wage benchmarking is where state-level data earns its keep. The average annual compensation for Plumbing, Heating, and Air-Conditioning Contractors employees in Illinois is $84,926/yr, versus a national average of $73,693/yr. Illinois pays above the national average for this industry, which usually reflects higher skill concentration, union density, or regional cost of living.

Profitability data is only available at the national level because the IRS Statistics of Income program does not publish state-level margin breakdowns. The national net profit margin for Plumbing, Heating, and Air-Conditioning Contractors is not reported, and while margins do vary by state, the direction of variance usually follows labor cost and establishment size, both shown above. For a complete picture, pair this state-industry view with the Plumbing, Heating, and Air-Conditioning Contractors national page (entity structure, SBA lending, sub-industries) and the Illinois overview (top employers, payroll dispersion across industries).