Registered plumber apprentices by county, open recruitment windows where the state publishes them, and how the apprentice tier fits Louisiana's license ladder. Updated nightly.
Louisiana has 671 registered plumber apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 47 counties, 1.5 per 10,000 residents. That is 9.0 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 |
|---|---|---|---|
| Jefferson Parish | 88 | 13% | 2.1 |
| East Baton Rouge Parish | 60 | 9% | 1.3 |
| Caddo Parish | 56 | 8% | 2.5 |
| Calcasieu Parish | 48 | 7% | 2.4 |
| St. Tammany Parish | 44 | 7% | 1.6 |
| Lafayette Parish | 38 | 6% | 1.5 |
| Orleans Parish | 32 | 5% | 0.9 |
| Ouachita Parish | 32 | 5% | 2.0 |
| Livingston Parish | 31 | 5% | 2.1 |
| Rapides Parish | 29 | 4% | 2.3 |
| Bossier Parish | 28 | 4% | 2.2 |
| Lincoln Parish | 18 | 3% | 3.8 |
| Acadia Parish | 12 | 2% | 2.1 |
| De Soto Parish | 12 | 2% | 4.4 |
| St. Landry Parish | 11 | 2% | 1.4 |
| 32 other counties | 132 | 20% |
Source: DOL RAPIDS apprenticeship FY2025, active status, county-coded; as of December 31, 2025.
Louisiana records apprentices on its own plumber license register as Apprentice Plumbing/Natural Gas: 1,379 active apprentice-tier records against 4,421 journeyman records, a ratio of 0.31 apprentice records per journeyman, register read October 6, 2026. The register's apprentice tier and the federal registered-apprenticeship count in the county table are two different systems: a license-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 State Plumbing Board of Louisiana (individual plumber licensing); Louisiana State Licensing Board for Contractors (contracting businesses) issues for this trade: Registered Apprentice Plumber, Journeyman Plumber, Master Plumber, Medical Gas and Water Supply Protection endorsements, Contractor license (LSLBC). See how to get a plumber license in Louisiana 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); license tiers: Louisiana register read October 6, 2026; population: U.S. Census 2023 estimates.
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