IQ by Country: Understanding Average IQ Statistics Around the World

Average IQ statistics by country are among the most searched — and most misunderstood — data points in cognitive science. Raw national IQ numbers tell only part of the story. Education quality, economic development, test design, language barriers, cultural context, and sample methodology all shape how these figures are collected and what they actually mean.

Our IQ by Country articles take a responsible, nuanced approach to this data. Rather than presenting league tables without context, each article explains the factors that drive regional differences, the limitations of cross-national comparisons, and what the numbers can and cannot tell us about human intelligence at scale.

Browse the articles below to explore specific regions and countries. To understand how your own score compares globally, take our International Standard IQ Test for a research-backed cognitive assessment.

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National IQ data is one piece of a much larger picture. Explore related topics to build a fuller understanding of intelligence:

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• Celebrity IQ — See estimated IQ scores of well-known figures across science, business, and culture.
• EQ Test — Measure your emotional intelligence alongside cognitive ability for a complete picture.
• IQ Tests — Take one of our free, research-backed IQ assessments to find out your own score.