Registered sheet metal worker apprentices by county, open recruitment windows where the state publishes them, and how the apprentice tier fits California's licence ladder. Updated nightly.
California has 1,835 registered sheet metal worker apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 43 counties, 0.5 per 10,000 residents. That is 22.0 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 |
|---|---|---|---|
| Los Angeles County | 454 | 25% | 0.5 |
| San Diego County | 270 | 15% | 0.8 |
| San Bernardino County | 122 | 7% | 0.6 |
| Riverside County | 112 | 6% | 0.4 |
| Orange County | 111 | 6% | 0.4 |
| Santa Clara County | 88 | 5% | 0.5 |
| Sacramento County | 83 | 5% | 0.5 |
| Alameda County | 76 | 4% | 0.5 |
| Contra Costa County | 47 | 3% | 0.4 |
| Fresno County | 47 | 3% | 0.5 |
| Stanislaus County | 47 | 3% | 0.9 |
| San Mateo County | 38 | 2% | 0.5 |
| San Joaquin County | 37 | 2% | 0.5 |
| Kern County | 34 | 2% | 0.4 |
| Merced County | 29 | 2% | 1.0 |
| 28 other counties | 240 | 13% |
Source: DOL RAPIDS apprenticeship FY2025, active status, county-coded; as of December 31, 2025.
The California register ATI reads carries no separate apprentice-tier credential for sheet metal workers; its ladder for this trade starts at Journeyman (191 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 California Contractors State License Board (CSLB), Department of Consumer Affairs issues for this trade: C-43 Sheet Metal Contractor, C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor. See how to get a sheet metal worker license in California 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: California register read September 16, 2026; population: U.S. Census 2023 estimates.
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