IQ 155 — How Rare It Is, What It Means & Famous People With This Score

Updated 2026-09-11 · Based on historical estimates and psychometric research
155
Highly Gifted
Top 0.012% · about 1 in 8,100

What Does an IQ of 155 Mean?

An IQ of 155 crosses the traditional "genius" threshold. Classified as "Highly Gifted," this score is achieved by approximately 1 in 8,138 of the population. Individuals at this level typically excel in complex analytical thinking and creative endeavors.

At 155, cognitive ability is well above the 99th percentile. People at this level often gravitate toward fields requiring deep abstract thought — theoretical physics, pure mathematics, philosophy, or groundbreaking creative work.

Classification
Highly Gifted
Percentile
99.99%
Std. Deviations
+3.7σ
Rarity
~1 in 8,138

Where IQ 155 Falls on the Bell Curve

IQ 155 7085100115130145160175190

The highlighted area shows the percentage of the population scoring at or above IQ 155. The dashed line marks the exact position of this score on the normal distribution.

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No geniuses in our database have an estimated IQ of exactly 155.

Explore geniuses with nearby IQ scores below, or browse all IQ rankings.

Explore Other IQ Scores

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About IQ Scores: IQ (Intelligence Quotient) scores follow a normal distribution with a mean of 100 and a standard deviation of 15. Historical IQ estimates for famous individuals are approximations based on their demonstrated achievements, not direct test results. These estimates should be considered illustrative rather than definitive.

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