Is 159 a Good IQ Score?

What an IQ of 159 means, where it ranks, and what it tells you about cognitive ability.

159

IQ Score

100th

Percentile

Very Superior

Classification

1 in 20,000

Rarity

What an IQ of 159 means

An IQ of 159 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 159 in context

IQ 159 sits 29 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 159 is 14 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 159 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 159 a good IQ score?

Yes. IQ 159 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 159?

The 100th percentile. That means 100% of the population scores at or below 159. 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 159?

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 159?

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.

Sharon Stone

Oscar-nominated actress — reportedly scored 154 on a formal IQ test, one of the highest formally documented scores among Hollywood actors. Stone attended Edinboro University of Pennsylvania on an academic scholarship at age 15.

Elon Musk

CEO of Tesla and SpaceX — IQ estimated at 155 in multiple technology and business profiles, based on his Queen's University and Penn physics record and documented ability to rapidly master aerospace, battery, and AI engineering.

Stephen Hawking

Theoretical physicist and bestselling author — IQ estimated at 160 by multiple biographers, based on his work in quantum cosmology and black hole thermodynamics. Hawking himself declined to confirm any figure, saying "people who boast about their IQ are losers."

Bill Gates

Microsoft co-founder — reportedly scored near-perfect on the SAT and his IQ is estimated at approximately 160 by multiple published profiles, consistent with his documented ability to absorb and synthesise complex technical material across many domains.

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.