Percentile 20 = IQ 87

IQ Test › IQ Percentile › 20
87
Smarter than 20% of people
87 · 19.3%55100145
Low Average
Low average, slightly below the population midpoint · Rarer than 1 in 5

Percentile 20 = IQ 87. Smarter than 20% of people. Classification: Low Average — Low average, slightly below the population midpoint. Rarer than 1 in 5.

IQClassificationPercentile
100Average50.0%
120Superior90.9%
130Very Superior / Gifted97.7%

❓ FAQ

What percentile is an IQ of 87?
An IQ of 87 sits at the 20.0th percentile — the top 80.0% of the population.
How many people have an IQ of 87 or higher?
Roughly 6,480,000,000 people worldwide — about 80.0% of 8.1 billion.
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📅 Last updated: 2026-06-18 · ✔ Reviewed by the All-Lifes editorial team · About · Methodology
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