Stationary engineers and boiler operators held about 50,000 jobs in 2004. Jobs were dispersed throughout a variety of industries. The majority of jobs were in State and local government facilities; hospitals; educational services; electric power generation, transmission, and distribution facilities; and manufacturing firms, such as pulp, paper, and paperboard mills. Other jobs were in architectural, engineering, and related services and real estate firms. Some were employed as contractors to a building or plant.
Stationary engineers and boiler operators worked throughout the country, generally in the more heavily populated areas in which large industrial and commercial establishments are located.