Registered fire sprinkler fitter apprentices by county, open recruitment windows where the state publishes them, and how the apprentice tier fits Illinois's licence ladder. Updated nightly.
Illinois has 159 registered fire sprinkler fitter apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 39 counties, 0.1 per 10,000 residents. That is 1.0 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 |
|---|---|---|---|
| Rock Island County | 15 | 9% | 1.1 |
| Winnebago County | 15 | 9% | 0.5 |
| Peoria County | 14 | 9% | 0.8 |
| Tazewell County | 14 | 9% | 1.1 |
| Champaign County | 9 | 6% | 0.4 |
| Macon County | 7 | 4% | 0.7 |
| Stephenson County | 7 | 4% | 1.6 |
| Boone County | 6 | 4% | 1.1 |
| Shelby County | 6 | 4% | 2.9 |
| Lee County | 5 | 3% | 1.5 |
| Will County | 5 | 3% | 0.1 |
| Douglas County | 4 | 3% | 2.0 |
| Ford County | 4 | 3% | 3.0 |
| Iroquois County | 4 | 3% | 1.5 |
| Sangamon County | 4 | 3% | 0.2 |
| 24 other counties | 40 | 25% |
Source: DOL RAPIDS apprenticeship FY2025, active status, county-coded; as of December 31, 2025.
The Illinois register ATI reads carries no separate apprentice-tier credential for fire sprinkler fitters; its ladder for this trade starts at Journeyman (874 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 Office of the Illinois State Fire Marshal, Division of Fire Prevention and Building Safety issues for this trade: Fire Sprinkler Contractor License, Fire Sprinkler Inspector License. See how to get a fire sprinkler fitter license in Illinois 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: Illinois register read September 16, 2026; population: U.S. Census 2023 estimates.
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