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How many licensed plumbers are in Indiana?
Licensed-supply count from the Indiana register, by credential tier and per capita.
As of 2026-08-09, Indiana has 12,526 licensed plumbers
on its state register.
12,526
licensed plumbers
182.5
per 100k residents
#9
of 42 states
Indiana plumbers by credential tier
Apprentice3,579
Journeyman4,500
Contractor4,447
How Indiana compares
State
Licensed plumbers
Per 100k
Illinois
15,751
125.5
California
14,076
36.1
Indiana
12,526
182.5
Idaho
11,107
565.3
Wisconsin
10,198
172.5
Indiana is part of 324,175 licensed plumbers nationally, and ranks #16 of 42 published states by per-capita density.
Questions
How many licensed plumbers are there in Indiana?
As of 2026-08-09, Indiana has 12,526 licensed plumbers on its state register.
How many plumbers per capita does Indiana have?
Indiana has 182.5 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.