Registered fire sprinkler fitter 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 1,017 registered fire sprinkler fitter apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 43 counties, 0.3 per 10,000 residents. That is 2.1 apprentices for every 100 employed fire sprinkler fitters in the state, the rate at which the trade is training its own replacements.
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Registered fire sprinkler fitter apprentices by county of the apprentice, largest first. Each county links to its fire sprinkler fitters market page.
| County | Apprentices | Share | Per 10k residents |
|---|---|---|---|
| San Diego County | 210 | 21% | 0.6 |
| Los Angeles County | 112 | 11% | 0.1 |
| Riverside County | 96 | 9% | 0.4 |
| Alameda County | 67 | 7% | 0.4 |
| Contra Costa County | 59 | 6% | 0.5 |
| San Bernardino County | 55 | 5% | 0.3 |
| Sacramento County | 54 | 5% | 0.3 |
| Santa Clara County | 42 | 4% | 0.2 |
| Fresno County | 40 | 4% | 0.4 |
| Orange County | 30 | 3% | 0.1 |
| San Joaquin County | 30 | 3% | 0.4 |
| Kern County | 26 | 3% | 0.3 |
| San Luis Obispo County | 19 | 2% | 0.7 |
| Stanislaus County | 18 | 2% | 0.3 |
| Ventura County | 17 | 2% | 0.2 |
| 28 other counties | 142 | 14% |
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 fire sprinkler fitters; its ladder for this trade starts at Journeyman (457 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 Contractors State License Board (C-16 Fire Protection Contractor licence) and CAL FIRE Office of the State Fire Marshal, Fire Engineering and Investigations Division, Automatic Extinguishing Systems Program (individual fire sprinkler fitter certification) issues for this trade: C-16 Fire Protection Contractor (Contractors State License Board), Fire Sprinkler Fitter Certification, Commercial (CAL FIRE Office of the State Fire Marshal), Fire Sprinkler Fitter Certification, Multi-Family Residential (CAL FIRE Office of the State Fire Marshal), Fire Sprinkler Fitter Apprentice Registration, Fire Sprinkler Fitter Trainee Registration. See how to get a fire sprinkler fitter 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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