Average IQ in South Korea: Score, Ranking & Analysis
Average IQ
106
Global Ranking
#2
out of ~199 countries
Region
East Asia
Important note: National average IQ scores are estimates based on limited sample sizes and vary across studies. These figures are heavily influenced by socioeconomic factors, access to quality education, healthcare, nutrition, and testing conditions. They do not reflect the intelligence or potential of any individual from that country. IQ scores measure specific cognitive skills and should be interpreted within their proper scientific context.
Education System in South Korea
South Korea has one of the most intensive education systems in the world. Students spend long hours in school and additional time at hagwons (private academies), often studying late into the evening. The Suneung college entrance exam is a defining event that shapes the national culture around education. South Korea consistently ranks in the top 5 on PISA assessments in math, science, and reading, with a literacy rate approaching 100%.
To understand what IQ scores measure and how they're calculated, see our guide on what IQ is. For a breakdown of what different score levels mean, visit our IQ score ranges page.
South Korea Compared to East Asia
Here is how South Korea compares to other countries in East Asia that are included in our database:
| Country | Average IQ | Global Rank |
|---|---|---|
| South Korea | 106 | #2 |
| Japan | 106 | #1 |
| China | 105 | #3 |
| Taiwan | 104 | #4 |
| Singapore | 108 | #5 |
| Hong Kong | 108 | #6 |
Countries with Similar Rankings
These countries have similar average IQ scores and global rankings to South Korea:
| Country | Average IQ | Global Rank | Region |
|---|---|---|---|
| Japan | 106 | #1 | East Asia |
| China | 105 | #3 | East Asia |
| Taiwan | 104 | #4 | East Asia |
| Singapore | 108 | #5 | East Asia |
| Hong Kong | 108 | #6 | East Asia |
Understanding IQ Distribution
It's crucial to remember that national averages represent the middle of a wide distribution. Within every country, individual IQ scores span the full range from below 70 to above 130 and beyond. A country with an average IQ of 106 will have many individuals scoring well above and below that number. Factors like socioeconomic status, nutrition, education quality, and access to healthcare play significant roles in cognitive development and test performance.
The Flynn Effect — the observation that IQ scores have risen substantially over time in many countries — suggests that environmental improvements like better nutrition, healthcare, and education access can significantly impact cognitive test performance at the population level. Many developing nations are experiencing rapid improvements in these areas.
Frequently Asked Questions
What is the average IQ in South Korea?
South Korea's average IQ is estimated at 106, ranking #2 globally. This score reflects the country's exceptional education system and cultural emphasis on academic achievement.
Why is South Korea's IQ so high?
South Korea's high average IQ is linked to its world-class education system, extensive private tutoring culture (hagwons), strong parental investment in education, excellent nutrition and healthcare, and high rates of urbanization.
How does South Korea compare to Japan?
South Korea and Japan share nearly identical average IQ scores of 106. Both countries have intense education cultures, high literacy rates, and consistently rank among the world's top performers on international cognitive and academic assessments.
Explore More Countries
See the full list of all countries on our Average IQ by Country page, or take our free IQ test to see how you compare.