— US state cognitive research
Average IQ by US state — all 50 states ranked
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State-level IQ estimates derived from published research including McDaniel (2006), state NAEP conversions, and educational attainment data. All figures are estimates with significant uncertainty.
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What drives state IQ differences?
→Pause. Find out YOUR IQ before you keep reading.State-level IQ variation in the US is largely driven by economic factors: educational spending, childhood poverty rates, and industry mix. States with major tech industries attract highly educated workers; states with high childhood poverty see lower average test performance. These are structural factors, not fixed attributes.
See also: Average IQ in the United States · Global average IQ
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