Registered boiler operator apprentices by county, open recruitment windows where the state publishes them, and how the apprentice tier fits Minnesota's licence ladder. Updated nightly.
Minnesota has 109 registered boiler operator apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 32 counties, 0.2 per 10,000 residents. That is 908.3 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 |
|---|---|---|---|
| Hennepin County | 14 | 13% | 0.1 |
| Anoka County | 11 | 10% | 0.3 |
| Itasca County | 10 | 9% | 2.2 |
| Sherburne County | 9 | 8% | 0.9 |
| Ramsey County | 6 | 6% | 0.1 |
| Scott County | 5 | 5% | 0.3 |
| St. Louis County | 5 | 5% | 0.2 |
| Chisago County | 4 | 4% | 0.7 |
| Mille Lacs County | 4 | 4% | 1.5 |
| Carlton County | 3 | 3% | 0.8 |
| Cass County | 3 | 3% | 1.0 |
| Dakota County | 3 | 3% | 0.1 |
| Stearns County | 3 | 3% | 0.2 |
| Steele County | 3 | 3% | 0.8 |
| Aitkin County | 2 | 2% | 1.2 |
| 17 other counties | 24 | 22% |
Source: DOL RAPIDS apprenticeship FY2025, active status, county-coded; as of December 31, 2025.
The Minnesota register ATI reads carries no separate apprentice-tier credential for boiler operators; its ladder for this trade starts at Journeyman (29,308 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 Minnesota Department of Labor and Industry, Construction Codes and Licensing Division (boiler engineer licensing, chief boiler inspector) issues for this trade: Special, Second Class Engineer Grade C (2-C), Second Class Engineer Grade B (2-B), Second Class Engineer Grade A (2-A), First Class Engineer Grade C (1-C), First Class Engineer Grade B (1-B), First Class Engineer Grade A (1-A), Chief Engineer Grade C (Ch-C), Chief Engineer Grade B (Ch-B), Chief Engineer Grade A (Ch-A), Historical (Steam Traction Engines), Provisional engineer license, Boat Master. See how to get a boiler operator license in Minnesota 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: Minnesota register read September 16, 2026; population: U.S. Census 2023 estimates.
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