Registered boiler operator apprentices by county, open recruitment windows where the state publishes them, and how the apprentice tier fits Kentucky's licence ladder. Updated nightly.
Kentucky has 55 registered boiler operator apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 26 counties, 0.1 per 10,000 residents. That is 148.6 apprentices for every 100 employed boiler operators in the state, the rate at which the trade is training its own replacements.
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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 |
|---|---|---|---|
| Carter County | 14 | 25% | 5.3 |
| Boyd County | 7 | 13% | 1.5 |
| Butler County | 3 | 5% | 2.4 |
| McCracken County | 3 | 5% | 0.4 |
| Muhlenberg County | 3 | 5% | 1.0 |
| Graves County | 2 | 4% | 0.5 |
| Henderson County | 2 | 4% | 0.5 |
| Logan County | 2 | 4% | 0.7 |
| Pulaski County | 2 | 4% | 0.3 |
| Adair County | 1 | 2% | 0.5 |
| Caldwell County | 1 | 2% | 0.8 |
| Calloway County | 1 | 2% | 0.3 |
| Campbell County | 1 | 2% | 0.1 |
| Daviess County | 1 | 2% | 0.1 |
| Elliott County | 1 | 2% | 1.4 |
| 11 other counties | 11 | 20% |
Source: DOL RAPIDS apprenticeship FY2025, active status, county-coded; as of December 31, 2025.
Credential types the No statewide Kentucky boiler operator licence identified. Boiler and pressure vessel INSPECTION is regulated at state level; operator licensing, where it exists, is municipal. issues for this trade: Municipal stationary engineer / boiler operator licences where required, State boiler and pressure vessel certificate of operation (on the equipment). See how to get a boiler operator license in Kentucky for hours, exams and renewal.
Sources: registered apprentices: DOL RAPIDS apprenticeship FY2025, active status, as of December 31, 2025; employment: BLS QCEW construction x OEWS occupation share (estimate); population: U.S. Census 2023 estimates.
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