IQ Score Guide / 155
Is 155 a Good IQ Score?
What an IQ of 155 means, where it ranks, and what it reveals about cognitive ability.
Where IQ 155 sits on the scale
An IQ of 155 is higher than 100% of people
Fewer than 1 in 100 people score 155 or higher, closer to 1 in 20,000.
What an IQ of 155 means
An IQ of 155 is extraordinarily rare, scored by fewer than 1 in 20,000 people. Someone at this level takes in information and spots patterns faster than almost anyone they will ever meet. School and most jobs rarely stretch a mind here, so the real challenge is usually finding problems big enough to stay interesting.
IQ 155 in context
IQ 155 sits 55 points above the average of 100. Only about 1 in 20,000 people score 155 or higher, so it is genuinely rare.
Frequently asked questions
Is 155 a good IQ score?
Yes. An IQ of 155 is well above average and rare, scored by only about 1 in 20000 people. It is above the Mensa cut-off of 130. Most people at this level find school and standard work easy rather than challenging.
What percentile is an IQ of 155?
An IQ of 155 is at about the 100th percentile. In plain terms, you score higher than around 100 out of every 100 people. The average score is 100.
What jobs suit an IQ of 155?
Most demanding careers are well within reach. Doctors, lawyers, researchers, engineers and senior leaders often score in this range. Keep in mind that people vary widely within any job, so the score is a rough guide, not a rule.
Can you improve an IQ of 155?
A little. Scores this high are strongly shaped by genetics, so big jumps are unlikely. Good sleep, regular exercise and a clear head on the day all help, but expect small gains rather than large ones.
Careers that commonly score in this range
Famous people near IQ 155
Reported or estimated figures from third-party sources, none are clinically verified.
Sharon Stone
Estimated around 154, 1 point below 155
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.
Paul Allen
Estimated around 150, 5 points below 155
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
Estimated around 150, 5 points below 155
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.
From the IQScore blog
Further reading selected for this score range.
What Is a Good IQ Score? →
Where every score lands, and what counts as good, average, or gifted.
IQ Score Ranges Explained →
Every band from below average to genius, and what each one means.
IQ Score by Age →
How scores shift with age, and what stays fixed over a lifetime.
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.
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