Registered plumber apprentices by county, open recruitment windows where the state publishes them, and how the apprentice tier fits Connecticut's licence ladder. Updated nightly.
Connecticut has 456 registered plumber apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 7 counties, 1.3 per 10,000 residents. That is 8.0 apprentices for every 100 employed plumbers in the state, the rate at which the trade is training its own replacements.
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Registered plumber apprentices by county of the apprentice, largest first. Each county links to its plumbers market page.
| County | Apprentices | Share | Per 10k residents |
|---|---|---|---|
| South Central Connecticut Planning Region | 152 | 33% | 2.7 |
| Capitol Planning Region | 109 | 24% | 1.1 |
| Western Connecticut Planning Region | 99 | 22% | 1.6 |
| Northwest Hills Planning Region | 38 | 8% | 3.3 |
| Southeastern Connecticut Planning Region | 38 | 8% | 1.4 |
| Lower Connecticut River Valley Planning Region | 11 | 2% | 0.6 |
| Northeastern Connecticut Planning Region | 9 | 2% | 0.9 |
Source: DOL RAPIDS apprenticeship FY2025, active status, county-coded; as of December 31, 2025.
Connecticut records apprentices on its own plumber licence register as PLUMBING TRAINEE: 10 active apprentice-tier records, register read September 16, 2026. The register's apprentice tier and the federal registered-apprenticeship count in the county table are two different systems: a licence-register apprentice is anyone the state has credentialed to work under supervision, a registered apprentice is enrolled in a DOL-registered program.
Counts are license records, not people: a holder with more than one license appears once per license, and a contractor license is a business, not a worker.
Credential types the Connecticut Department of Consumer Protection (DCP), Occupational and Professional Licensing Division issues for this trade: P-2 Plumbing Journeyperson (unlimited), P-1 Plumbing Contractor, P-4 / limited plumbing classifications, Apprentice registration (CT DOL). See how to get a plumber license in Connecticut 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: Connecticut register read September 16, 2026; population: U.S. Census 2023 estimates.
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