Registered boiler operator apprentices by county, open recruitment windows where the state publishes them, and how the apprentice tier fits Michigan's licence ladder. Updated nightly.
Michigan has 77 registered boiler operator apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 23 counties, 0.1 per 10,000 residents.
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Registered boiler operator apprentices by county of the apprentice, largest first. Each county links to its boiler operators market page.
| County | Apprentices | Share | Per 10k residents |
|---|---|---|---|
| Wayne County | 25 | 32% | 0.1 |
| St. Clair County | 7 | 9% | 0.4 |
| Muskegon County | 6 | 8% | 0.3 |
| Bay County | 5 | 6% | 0.5 |
| Lenawee County | 5 | 6% | 0.5 |
| Monroe County | 5 | 6% | 0.3 |
| Delta County | 4 | 5% | 1.1 |
| Berrien County | 2 | 3% | 0.1 |
| Jackson County | 2 | 3% | 0.1 |
| Marquette County | 2 | 3% | 0.3 |
| Oakland County | 2 | 3% | 0.0 |
| Allegan County | 1 | 1% | 0.1 |
| Cheboygan County | 1 | 1% | 0.4 |
| Dickinson County | 1 | 1% | 0.4 |
| Eaton County | 1 | 1% | 0.1 |
| 8 other counties | 8 | 10% |
Source: DOL RAPIDS apprenticeship FY2025, active status, county-coded; as of December 31, 2025.
The Michigan register ATI reads carries no separate apprentice-tier credential for boiler operators; its ladder for this trade starts at Journeyman (1,951 active records, read September 16, 2026). Registered apprentices in the county table above are counted from the federal apprenticeship system, not from the licence register.
Credential types the Michigan Department of Licensing and Regulatory Affairs, Bureau of Construction Codes, Boiler Division issues for this trade: Low Pressure Boiler Operator registration, High Pressure Boiler Operator registration, 3rd Class Stationary Engineer registration, 2nd Class Stationary Engineer registration, 1st Class Stationary Engineer registration, Boiler Installer license (classes 1B, 2B, 3B, 4B, 5B, 6B and P), Boiler Repairer license (classes I, II, III, IV, V and P), Boiler Inspector license. See how to get a boiler operator license in Michigan for hours, exams and renewal.
Sources: registered apprentices: DOL RAPIDS apprenticeship FY2025, active status, as of December 31, 2025; licence tiers: Michigan register read September 16, 2026; population: U.S. Census 2023 estimates.
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