How Many Plumbers Are in the US?
The United States employs roughly 480,000 plumbers, pipefitters, and steamfitters, according to the Bureau of Labor Statistics. That figure represents the backbone of a trade that keeps homes, hospitals, and factories running but is also navigating a steady wave of retirements and rising demand.
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Where Plumbers Work
Most plumbers in the US are employed by plumbing, heating, and air-conditioning contractors. A significant share works in building equipment contracting, while others are self-employed, handling residential repairs and new construction installs. States with the largest construction sectors and the oldest housing stock — including California, Texas, New York, Florida, and Illinois — tend to employ the highest numbers of plumbers.
Supply and Demand Trends
Demand for plumbers has outpaced supply for years. The BLS projects employment growth for plumbers, pipefitters, and steamfitters that stays above the average for all occupations through the next decade. Key drivers include new residential and commercial construction, the need to upgrade aging water and gas infrastructure, and stricter energy-efficiency and plumbing codes. At the same time, an aging workforce means more experienced plumbers are leaving the field than entering it.
Training and Licensing
Most plumbers enter the trade through a four- or five-year apprenticeship that combines paid on-the-job training with classroom instruction. After completing an apprenticeship, workers typically must obtain a state or local license, though requirements vary widely. Some states require a journeyman license before a plumber can work independently, while others have additional master-plumber tiers for those who oversee larger projects or run their own firms.
What the Numbers Mean for Homeowners
A tight labor market for plumbers means longer wait times for appointments, especially during peak construction seasons or after major weather events. It also puts upward pressure on wages and service fees. For homeowners, getting multiple quotes, scheduling repairs early, and maintaining routine preventive care can help manage costs and reduce the likelihood of emergency calls.
Looking Ahead
Efforts to expand the pipeline of new plumbers — through expanded apprenticeship programs, trade-school partnerships, and recruitment campaigns — are underway in many states. Whether those efforts can keep pace with infrastructure needs and an aging workforce will shape how easily homeowners and businesses can access plumbing services in the years ahead.