Average IQ in United States: Score, Ranking & Analysis
Average IQ
98
Global Ranking
#29
out of ~199 countries
Region
North America
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 United States
The United States has a highly decentralized education system with significant variation across its 50 states and 13,000+ school districts. The country is home to the world's most prestigious universities and leads in research output, yet K-12 education quality varies dramatically by zip code. The US spends more per student than almost any other country but achieves middling results on PISA. Significant achievement gaps exist along racial, ethnic, and socioeconomic lines.
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.
United States Compared to North America
Here is how United States compares to other countries in North America that are included in our database:
| Country | Average IQ | Global Rank |
|---|---|---|
| United States | 98 | #29 |
| Canada | 99 | #22 |
| Mexico | 87 | #106 |
Countries with Similar Rankings
These countries have similar average IQ scores and global rankings to United States:
| Country | Average IQ | Global Rank | Region |
|---|---|---|---|
| Belgium | 100 | #19 | Europe |
| Canada | 99 | #22 | North America |
| Australia | 99 | #23 | Oceania |
| Sweden | 99 | #24 | Europe |
| Norway | 99 | #25 | Europe |
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 98 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.
Historical Context: IQ Trends in United States
The United States created the world's first mass public university system through the 1862 Morrill Land-Grant Act, which established publicly funded universities in every state. The GI Bill (1944) sent nearly 8 million veterans to college, creating the world's most educated workforce by 1960. The Sputnik shock of 1957 triggered the National Defense Education Act, massively increasing STEM investment. However, rising inequality from the 1980s onward, combined with zip-code-based school funding, created dramatic disparities. In PISA 2022, the US scored 465 in mathematics — below OECD average — despite spending more per student than almost any other nation.
Education System Deep Dive
American education is governed by 50 state systems plus Washington D.C., with 13,000+ local school districts setting policy. The federal government's role increased through No Child Left Behind (2001) and Every Student Succeeds Act (2015). SAT and ACT remain university admission benchmarks, though over 1,700 colleges now test-optional. The US has 4,000+ higher education institutions, including the world's top-ranked universities: MIT, Harvard, Stanford, and CalTech. Advanced Placement (AP) and International Baccalaureate (IB) programs offer rigorous secondary courses. Racial achievement gaps and the relationship between property taxes and school funding remain unresolved structural issues.
Cognitive Achievements and Scientific Output
The United States leads all nations with over 400 Nobel laureates, representing roughly 40% of all prizes. American scientists discovered the transistor (Bell Labs), invented the internet, and sequenced the human genome. The US has won more Fields Medals than any other nation. John Nash (game theory), Claude Shannon (information theory), and Richard Feynman (quantum electrodynamics) represent American theoretical brilliance. American universities produced Einstein, Fermi, and von Neumann after WWII immigration, demonstrating the power of welcoming international intellectual talent.
Frequently Asked Questions
What is the average IQ in the United States?
The US average IQ is estimated at 98, ranking #29 globally. This slightly below-average score for a wealthy nation reflects the country's vast size, diversity, and significant inequality in educational access.
Why doesn't the US score higher given its wealth?
The US has extreme variation in education quality, with some of the world's best schools alongside severely underfunded ones. High child poverty rates, healthcare inequality, and large achievement gaps across demographic groups all contribute to a national average that does not reflect the country's peak performance.
How does the US compare to Canada?
The US (98) scores slightly below Canada (99). Canada's more equitable school funding, universal healthcare, and lower child poverty rates likely contribute to its slightly higher and more uniform cognitive outcomes.
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.
MyIQScores Editorial Team
Researchers in cognitive psychology, psychometrics & educational science
Last updated
May 10, 2026
All content on MyIQScores is reviewed for scientific accuracy against peer-reviewed research in cognitive psychology and psychometrics. Our editorial team cross-references each article with published literature before publication and updates pages whenever new research warrants a revision.