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How many licensed boiler operators are in Maryland?
Licensed-supply count from the Maryland register, by credential tier and per capita.
As of 2026-08-09, Maryland has 3,372 licensed boiler operators
on its state register, 2,023 of them at master level.
3,372
licensed boiler operators
2,023
master level
54.6
per 100k residents
#2
of 16 states
Maryland boiler operators by credential tier
Apprentice131
Intermediate368
Journeyman850
Master2,023
How Maryland compares
State
Licensed boiler operators
Per 100k
Minnesota
29,566
515.3
Maryland
3,372
54.6
Oregon
2,250
53.1
Maine
2,232
159.9
Maryland is part of 43,389 licensed boiler operators nationally, and ranks #3 of 16 published states by per-capita density.
Questions
How many licensed boiler operators are there in Maryland?
As of 2026-08-09, Maryland has 3,372 licensed boiler operators on its state register, including 2,023 at master level.
How many boiler operators per capita does Maryland have?
Maryland has 54.6 licensed boiler operators per 100,000 residents (Census 2023 population).
Is this the same as employment estimates?
No. This is a count of active licenses on the state register, not a BLS survey estimate of employment. Licensed capacity and estimated employment are different numbers.
How often is this updated?
The register is re-pulled and re-judged nightly. Every figure carries its as-of date.
New licenses, ladder upgrades, classification changes and lapses, by market and credential tier. Read the quarterly free, or license the underlying data.