Is 156 a Good IQ Score?

What an IQ of 156 means, where it ranks, and what it tells you about cognitive ability.

156

IQ Score

100th

Percentile

Very Superior

Classification

1 in 20,000

Rarity

What an IQ of 156 means

An IQ of 156 places you at the 100th percentile. Fewer than 1 in 100 people score at this level. Cognitive processing speed, working memory, and abstract reasoning all operate well beyond what standard assessments are designed to measure. Researchers estimated in this range have typically reshaped entire fields rather than mastered existing ones. Standard professional and academic tracks are rarely a cognitive match here.

IQ 156 in context

IQ 156 sits 26 points above the Mensa threshold of 130, placing it at the 100th percentile. Roughly 1 in 20000 people score at this level. IQ 145 marks three standard deviations above the mean — IQ 156 is 11 points above that marker. Standard IQ instruments lose measurement precision at this level — tests normed on general populations cannot reliably distinguish between scores above IQ 145. Researchers studying extreme cognitive ability note that the practical gap between IQ 156 and the average person (IQ 100) exceeds the gap between average and borderline functioning in the opposite direction. Most individuals in this range report that finding intellectual peers requires actively seeking specialist environments.

Frequently asked questions

Is 156 a good IQ score?

Yes. IQ 156 is in the top 0% — Very Superior range, 100th percentile. Roughly 1 in 999 people score here. Most people at this level find standard academic and professional environments understimulating rather than challenging.

What percentile is an IQ of 156?

The 100th percentile. That means 100% of the population scores at or below 156. Fewer than 1 in 999 people score at this level. The population mean is 100 with a standard deviation of 15.

What careers are associated with an IQ of 156?

Research, medicine, law, mathematics, and senior academic roles draw heavily from this range. Roughly 1 in 999 people score at this level — the cognitive demands of most professional fields feel tractable rather than effortful here.

Can you improve an IQ of 156?

Scores at this level have high genetic loading — heritability runs 50–80% in adults. Sleep, nutrition, and working memory training have documented effects on fluid intelligence, but the honest expectation is modest gains. Large jumps are not supported by the evidence.

Careers that commonly score in this range

Research ScientistMean ~130–140 in published occupational studies

SurgeonCognitive demands of surgical decision-making correlate with 130+ range

Senior Academic / ProfessorParticularly in mathematics, physics, philosophy

Top-tier Software EngineerFAANG engineers cluster near this range in self-reported data

Notable people reportedly in this range

All figures are estimates or reported by third-party sources — none are clinically verified.

Paul Allen

Microsoft co-founder and billionaire philanthropist — reportedly scored 1600 on the SAT (pre-1995 scale). Multiple technology and business profiles estimate his IQ at approximately 150.

Dolph Lundgren

Actor and chemical engineer — holds a master's degree in chemical engineering from the University of Sydney and was awarded a Fulbright Scholarship to MIT. IQ reportedly assessed at 150–160 in published profiles.

Mark Zuckerberg

Meta co-founder and CEO — reportedly scored a near-perfect 1590 on his SAT (pre-1995 scale) before attending Harvard. Multiple published profiles estimate his IQ at approximately 150–152.

Jeff Bezos

Amazon founder — Princeton-educated with a degree in electrical engineering and computer science. Published assessments estimate his IQ at approximately 145–155 based on academic record and documented problem-solving at scale.

From the IQScore blog

Further reading selected for this score range.

What IQ Score Is Needed for Mensa? →

The threshold, the test, and what membership actually means.

The Dark Side of High Intelligence →

What the research says about the less-discussed costs of scoring at this level.

How Much of IQ Is Genetic? →

Twin studies and what the heritability data actually shows.

Fluid vs Crystallised Intelligence →

The two cognitive systems, and why the distinction matters at high scores.