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How many licensed plumbers are in Colorado?
Licensed-supply count from the Colorado register, by credential tier and per capita.
As of 2026-08-09, Colorado has 21,082 licensed plumbers
on its state register, 4,898 of them at master level.
21,082
licensed plumbers
4,898
master level
358.7
per 100k residents
#2
of 42 states
Colorado plumbers by credential tier
Apprentice9,752
Intermediate547
Journeyman2,885
Master4,898
Contractor3,000
How Colorado compares
State
Licensed plumbers
Per 100k
Massachusetts
24,466
349.4
Colorado
21,082
358.7
Iowa
18,092
564.1
Michigan
17,967
179.0
Colorado is part of 324,175 licensed plumbers nationally, and ranks #6 of 42 published states by per-capita density.
Questions
How many licensed plumbers are there in Colorado?
As of 2026-08-09, Colorado has 21,082 licensed plumbers on its state register, including 4,898 at master level.
How many plumbers per capita does Colorado have?
Colorado has 358.7 licensed plumbers 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.