Registered plumber apprentices by county, open recruitment windows where the state publishes them, and how the apprentice tier fits Oklahoma's license ladder. Updated nightly.
Oklahoma has 321 registered plumber apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 37 counties, 0.8 per 10,000 residents. That is 5.7 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 |
|---|---|---|---|
| Tulsa County | 76 | 24% | 1.1 |
| Oklahoma County | 57 | 18% | 0.7 |
| Cleveland County | 23 | 7% | 0.8 |
| Canadian County | 13 | 4% | 0.7 |
| Adair County | 12 | 4% | 6.1 |
| Delaware County | 12 | 4% | 2.9 |
| Rogers County | 12 | 4% | 1.2 |
| Sequoyah County | 12 | 4% | 3.0 |
| Wagoner County | 10 | 3% | 1.1 |
| Le Flore County | 9 | 3% | 1.8 |
| Payne County | 8 | 2% | 1.0 |
| Lincoln County | 7 | 2% | 2.0 |
| Osage County | 7 | 2% | 1.5 |
| Kay County | 6 | 2% | 1.4 |
| Comanche County | 5 | 2% | 0.4 |
| 22 other counties | 52 | 16% |
Source: DOL RAPIDS apprenticeship FY2025, active status, county-coded; as of December 31, 2025.
Oklahoma records apprentices on its own plumber license register as Plumbing Apprentice Registration: 3,883 active apprentice-tier records against 1,515 journeyman records, a ratio of 2.56 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 Oklahoma Construction Industries Board (CIB), Plumbing Division issues for this trade: Registered Plumbing Apprentice, Plumbing Journeyman, Plumbing Contractor, Temporary Journeyman Plumbing license. See how to get a plumber license in Oklahoma 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: Oklahoma register read October 6, 2026; population: U.S. Census 2023 estimates.
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