Registered sheet metal worker apprentices by county, open recruitment windows where the state publishes them, and how the apprentice tier fits Iowa's licence ladder. Updated nightly.
Iowa has 297 registered sheet metal worker apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 38 counties, 0.9 per 10,000 residents. That is 18.2 apprentices for every 100 employed sheet metal workers in the state, the rate at which the trade is training its own replacements.
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Registered sheet metal worker apprentices by county of the apprentice, largest first. Each county links to its sheet metal workers market page.
| County | Apprentices | Share | Per 10k residents |
|---|---|---|---|
| Polk County | 65 | 22% | 1.3 |
| Linn County | 61 | 21% | 2.7 |
| Scott County | 36 | 12% | 2.1 |
| Woodbury County | 16 | 5% | 1.5 |
| Dubuque County | 14 | 5% | 1.4 |
| Pottawattamie County | 13 | 4% | 1.4 |
| Johnson County | 12 | 4% | 0.8 |
| Warren County | 12 | 4% | 2.2 |
| Benton County | 9 | 3% | 3.5 |
| Des Moines County | 8 | 3% | 2.1 |
| Clinton County | 5 | 2% | 1.1 |
| Dallas County | 5 | 2% | 0.5 |
| Webster County | 5 | 2% | 1.4 |
| Jones County | 4 | 1% | 1.9 |
| Lee County | 3 | 1% | 0.9 |
| 23 other counties | 29 | 10% |
Source: DOL RAPIDS apprenticeship FY2025, active status, county-coded; as of December 31, 2025.
Credential types the No dedicated Iowa sheet metal worker licence. Sheet metal work is regulated through the state's mechanical/HVAC licensing where it applies: Iowa Plumbing and Mechanical Systems Board, Iowa Department of Inspections, Appeals and Licensing. issues for this trade: Iowa mechanical/HVAC credential covering ductwork and sheet metal, Registered apprenticeship (USDOL or joint apprenticeship committee). See how to get a sheet metal worker license in Iowa 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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