Registered plumber apprentices by county, open recruitment windows where the state publishes them, and how the apprentice tier fits New Jersey's licence ladder. Updated nightly.
New Jersey has 973 registered plumber apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 21 counties, 1.0 per 10,000 residents. That is 11.0 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 |
|---|---|---|---|
| Ocean County | 99 | 10% | 1.5 |
| Monmouth County | 88 | 9% | 1.4 |
| Bergen County | 71 | 7% | 0.7 |
| Camden County | 68 | 7% | 1.3 |
| Middlesex County | 68 | 7% | 0.8 |
| Morris County | 67 | 7% | 1.3 |
| Gloucester County | 66 | 7% | 2.1 |
| Burlington County | 59 | 6% | 1.3 |
| Passaic County | 57 | 6% | 1.1 |
| Union County | 44 | 5% | 0.8 |
| Mercer County | 36 | 4% | 0.9 |
| Atlantic County | 34 | 3% | 1.2 |
| Somerset County | 33 | 3% | 0.9 |
| Essex County | 32 | 3% | 0.4 |
| Cumberland County | 28 | 3% | 1.8 |
| 6 other counties | 123 | 13% |
Source: DOL RAPIDS apprenticeship FY2025, active status, county-coded; as of December 31, 2025.
New Jersey records apprentices on its own plumber licence register as Apprentice Plumber: 5 active apprentice-tier records against 49 journeyman records, a ratio of 0.1 apprentice records per journeyman, 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 New Jersey State Board of Examiners of Master Plumbers, Division of Consumer Affairs issues for this trade: Master Plumber (licensed), Registered apprentice/journeyman (worked toward licensure; state license is at Master level). See how to get a plumber license in New Jersey 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: New Jersey register read September 16, 2026; population: U.S. Census 2023 estimates.
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