Superior intelligence, strong reasoning, roughly top 10% · Rarer than 1 in 12
🏛️ Mensa cutoff 130 — 9 points away
🌍 In the United States (national average ≈ 98, an estimate from test samples), an IQ of 121 is in the top 6.3%.
What an IQ of 121 means. Smarter than 91.9% of people. Classification: Superior — Superior intelligence, strong reasoning, roughly top 10%. Rarer than 1 in 12.
IQ
Classification
Percentile
100
Average
50.0%
120
Superior
90.9%
130
Very Superior / Gifted
97.7%
❓ FAQ
Is an IQ of 121 a good score?
An IQ of 121 falls in the "Superior" range and is higher than 91.9% of the population.
What percentile is an IQ of 121?
An IQ of 121 sits at the 91.9th percentile — the top 8.1% of the population. Roughly 1 in 12 people score this high.
Can you join Mensa with an IQ of 121?
Mensa requires roughly IQ 130 (top 2% on SD15); 121 is 9 points below the cutoff. Practice and a supervised test may close the gap.
How many people have an IQ of 121 or higher?
Roughly 654,129,382 people worldwide — about 8.1% of 8.1 billion.