Registered boiler operator apprentices by county, open recruitment windows where the state publishes them, and how the apprentice tier fits Tennessee's licence ladder. Updated nightly.
Tennessee has 234 registered boiler operator apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 44 counties, 0.3 per 10,000 residents. That is 339.1 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 |
|---|---|---|---|
| Hamilton County | 35 | 15% | 0.9 |
| Henry County | 31 | 13% | 9.5 |
| Bradley County | 21 | 9% | 1.9 |
| Shelby County | 20 | 9% | 0.2 |
| Marion County | 12 | 5% | 4.1 |
| Obion County | 11 | 5% | 3.6 |
| Rhea County | 8 | 3% | 2.4 |
| Benton County | 6 | 3% | 3.7 |
| Cumberland County | 5 | 2% | 0.8 |
| Davidson County | 5 | 2% | 0.1 |
| Knox County | 5 | 2% | 0.1 |
| Polk County | 5 | 2% | 2.8 |
| Roane County | 5 | 2% | 0.9 |
| Anderson County | 4 | 2% | 0.5 |
| McNairy County | 4 | 2% | 1.5 |
| 29 other counties | 57 | 24% |
Source: DOL RAPIDS apprenticeship FY2025, active status, county-coded; as of December 31, 2025.
The Tennessee register ATI reads carries no separate apprentice-tier credential for boiler operators; its ladder for this trade starts at Journeyman (56 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 No statewide Tennessee 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 Tennessee 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); licence tiers: Tennessee register read September 16, 2026; population: U.S. Census 2023 estimates.
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