Average IQ of a plumber

There is no reliable, representative published average IQ for plumbers. LifeScore's 100 is an editorial benchmark for how much reasoning and learning the role demands.

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Key facts

Demand benchmark
100, an editorial rating, not a measured average
Cognitive load
Medium
Burnout risk
Moderate
Industry
Skilled Trades

The benchmark is not a measured average, a requirement or a cutoff, and it should never be used for hiring or to rule a career in or out.

Your score next to plumbers

10 points above our editorial benchmark of 100. That benchmark is a rough guide to the role's reasoning demands, not a measured average or a requirement.

In the general population, 110 is higher than about 75% of people.

Jobs with published IQ figures

Best estimates from the same sources, so the jobs can be compared. Ranges overlap a lot: every job has people well above and well below its average.

JobMedianMiddle 50%
DentistsClosest group120112 to 127
Doctors120112 to 127
SurgeonsClosest group120112 to 127
Professors116106 to 125
Electrical engineers113103 to 121
Lawyers113109 to 124
Mechanical engineersClosest group11099 to 123
Software developers110102 to 120
Software engineers110102 to 120
ActuariesClosest group10999 to 117
Civil engineersClosest group10999 to 120
Nurses10799 to 117

Medians from Hauser (2002), Wisconsin Longitudinal Study. “Closest group” rows have no study of their own and use the nearest published group.

What the job demands

A Plumber works in the Skilled Trades industry with a cognitive load classified as Medium. LifeScore uses 100 as an editorial cognitive-demand benchmark for comparing roles, not as a measured occupational average or a minimum hiring requirement. Burnout risk is rated Moderate.

Cognitive load is Medium. That means sustained reasoning is required, not occasional cleverness.

LifeScore role ratings, 1 to 10. Editorial, not measured.

Logic and analysis
7
Stress
7
Social contact
7
Structure and routine
7
Creativity
5

Making the career sustainable

A common misconception is that IQ alone predicts success. In reality, discipline and environment design often dominate outcomes once you’re above a baseline competence threshold.

General reasoning affects how fast people learn a role, but it is not a gate. Qualifications, practice, domain knowledge, tools, teamwork and job design all change performance.

Average IQ of a plumber: questions people ask

What IQ do you need to be a plumber?

There is no scientifically established minimum IQ for becoming a plumber. LifeScore’s 100 figure is an editorial benchmark for the role’s learning and reasoning demands, not an eligibility cutoff. Training, experience, judgment and persistence all matter.

Is being a plumber stressful?

Stress demand is rated 7/10 with burnout risk Moderate. If you don’t build recovery (sleep, boundaries, exercise), stress compounds.

What personality traits help a plumber?

Roles with high structure demand (7/10) reward conscientiousness; roles with high social demand (7/10) reward social energy and emotional regulation.

Can I succeed as a plumber if I’m below the “recommended” IQ?

Yes. There is no valid IQ cutoff for this occupation. Qualifications, deliberate practice, experience, support and role specialization are more useful career decisions than comparing yourself with an estimated benchmark.

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What's your IQ?

Treat your score as one data point next to your skills, interests and experience. It is never a reason to rule a career in or out.

Take the IQ test

25 questions · about 12 minutes