Average IQ by state: map and complete list.

How to read average IQ by state

The United States does not administer a nationwide IQ test to every resident and then publish a state ranking. Pesta 2022 reports derived state estimates that combine educational assessments. NAEP covers students; PIAAC covers sampled adults. Those are different populations, years, and instruments.

Small gaps between states are not precise rankings of residents and cannot describe any one person. Informal fills that are not in Pesta Table 2 are labeled as estimates. Open a state page to inspect the measure, year, and limitations—those entity pages stay noindex until each has unique, source-backed copy.