Plumber Salary in Maryland 2026,
$65,400 Median | BLS Data by City

The BLS row covering this trade is Plumbers, Pipefitters, and Steamfitters, which publishes a Maryland median of $65,400 a year, or $31.44 an hour, per OEWS May 2025 — 2.5% above the national median of $63,800. The band runs from $45,630 at the 10th percentile to $108,420 at the 90th, and the upper half is weighted toward industrial pipefitting rather than residential plumbing.

Through the Maryland State Board of Plumbing, in the Maryland Department of Labor. An apprentice registers and works under a licensed plumber while accumulating documented experience, then sits the journey plumber examination. The master plumber licence requires further licensed experience and is what permits contracting for plumbing work and pulling permits. Maryland also issues a separate natural gas fitter licence.

Among the published metros, Baltimore-Columbia-Towson at $63,200, then Salisbury $61,940, Lexington Park $57,700 and Hagerstown-Martinsburg $55,130. Every one of those sits below the statewide median of $65,400, which tells you the highest-paid work on this row is spread outside those metro areas — in industrial and institutional pipefitting rather than in metropolitan residential plumbing.

Authority. The journey plumber licence permits independent plumbing work; the master plumber licence, which requires further licensed experience beyond the journey tier, is what permits contracting for plumbing work and pulling permits in one's own name. Both are issued by the Maryland State Board of Plumbing. The master licence is therefore the gateway from being paid for skill to running a business.

Because the row combines two trades. Residential and light commercial plumbing occupies the lower half; industrial and mechanical pipefitting and steamfitting — process piping, steam and hydronic systems, hospital and institutional plant, power work — occupies the upper half and pays on a different scale. The $94,890 seventy-fifth percentile and the $108,420 ninetieth are effectively pipefitting and contractor figures rather than plumbing ones.

It means the published median describes a blend of two related but economically different trades. Plumbing installs and maintains water supply, drainage and fixture systems, largely in residential and commercial buildings. Pipefitting and steamfitting install and maintain process, steam, hydronic and high-pressure piping in industrial, institutional and power settings, to different codes and with different qualification and testing requirements. The second pays substantially more, and both are counted in SOC 47-2152. In Maryland, where institutional and federal facilities are a large share of the built environment, the pipefitting side is well represented — which is why the band stretches to $108,420 while every published metro sits below the state median. A plumber who never moves into mechanical work will spend a career in the lower half of this band regardless of skill.

Because it is driven by things that do not stop. Hospitals and university campuses run continuous mechanical maintenance and capital projects; federal and defence facilities require compliant, often specification-heavy plumbing and piping work; water and wastewater infrastructure across the state is old and being renewed; and Baltimore and the older suburbs have a housing stock whose supply and drainage systems need replacing rather than installing. None of that is speculative construction, which means the trade here is less exposed to a downturn than in a growth-construction market. The corresponding constraint is supply: the Maryland State Board of Plumbing's apprentice-to-journey path takes years, and a meaningful share of licensed plumbers is approaching retirement. A 1.38 location quotient across 11,420 positions is what steady credential-limited demand looks like.

It depends on whether the goal is a business. The master plumber licence permits contracting and pulling permits in one's own name, and it is the only route to the top of this band that does not involve moving into industrial pipefitting. But it converts a tradesperson into a business owner, with everything that entails: bonding and insurance, receivables, local permitting relationships across Baltimore City and the counties, self-employment tax, quarterly estimates, and Maryland's state plus county income tax on the profit. For a plumber who wants higher earnings without that, the more direct route is mechanical and industrial pipefitting, which reaches the $94,890 seventy-fifth percentile on someone else's payroll and with someone else's risk.