Average IQ by City: World's Smartest Cities Ranked
The table below presents estimated average IQ scores for 50 major world cities. City-level estimates are extrapolated from national averages adjusted for urban selection effects, educational attainment, PISA regional scores where available, and economic composition of the resident population. Cities typically score 5–10 points above their national averages due to the concentration of educated professionals in economic and educational hubs.
Methodology note: These are estimates, not direct measurements. No comprehensive city-wide IQ studies exist for most cities. Figures are derived from national averages, PISA city/region scores (where available), educational attainment data, and research on urban cognitive selection effects. They reflect population-level trends and do not predict the intelligence of any individual. For more on how IQ is measured, see our complete guide to IQ.
Showing 52 of 52 cities. Click column headers to sort.
What Drives IQ Differences Between Cities?
Urban IQ differences are driven by two main forces: selection effects and environmental factors.
Selection effects occur when cities attract ambitious, educated individuals through economic opportunity and educational prestige. Tech hubs like San Francisco and Seoul draw STEM graduates from across their countries and the world. Financial capitals like London, New York, and Zurich attract highly educated professionals in finance, law, and consulting. Academic centers like Boston concentrate researchers and students at elite institutions.
Environmental factors include the quality and availability of education in the city, healthcare access, childhood nutrition, and economic conditions that allow parents to invest in their children's cognitive development. Cities in wealthy countries with strong public services tend to score higher not just because of selection effects but because the environment supports cognitive development across all socioeconomic strata.
Asia: Highest-Scoring Region
East and Southeast Asian cities dominate the top of the rankings. Singapore (110), Hong Kong (109), Tokyo and Seoul (both 108), and Shenzhen and Shanghai (both 108) reflect the extraordinary investment in education across this region. High-pressure testing cultures, supplementary tutoring industries, and strong cultural emphasis on academic achievement contribute to consistently exceptional performance on cognitive assessments.
North America: Technology and University Hubs Lead
Among American cities, the pattern is clear: cities with the densest concentrations of technology companies or world-leading universities score highest. San Francisco (107) and Boston (106) outperform larger cities like New York (105) and Chicago (103). In Canada, Toronto and Montreal (both around 103–104) benefit from the country's points-based immigration system that selects for educational attainment.
Europe: Nordic and Swiss Cities Cluster at the Top
European cities show a clear north-south gradient, with Nordic capitals (Oslo, Stockholm, Copenhagen) and Swiss cities (Zurich) scoring around 103–104, reflecting their wealthy welfare states that invest heavily in universal education and healthcare. Southern European capitals like Madrid and Rome score around 97–99, below the EU average but above their national figures.
Frequently Asked Questions
Which city has the highest average IQ in the world?
Singapore consistently scores highest among world cities, with an estimated average IQ around 110. Hong Kong (109), Tokyo (108), and Seoul (108) are close behind. These cities share high-pressure education cultures, strong economies, and large concentrations of highly educated residents.
Why do cities score higher than their national averages?
Cities typically score 5–10 points above national averages due to selection effects: ambitious, highly educated individuals migrate to economic capitals for education and career opportunities. Capital cities and major financial or technology hubs concentrate cognitive ability through this self-reinforcing process. Better access to quality education, healthcare, and nutrition in urban centers also plays a role.
Are city IQ estimates reliable?
City-level IQ estimates are less reliable than national figures because there are no comprehensive city-wide IQ studies for most cities. These figures are extrapolated from national averages, PISA regional scores where available, educational attainment data, and economic selection effect research. They should be treated as rough estimates.
Which American city has the highest average IQ?
San Francisco (107) and Boston (106) consistently rank as the highest-IQ major American cities, due to the Bay Area's extraordinary technology industry and Boston's world-leading university density. Seattle (106) and New York (105) follow closely.
Learn more about what IQ means, explore the Average IQ by Country rankings, or take our free IQ test.
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.