Average Iq In Usa 2024 By Age. The groundbreaking study found that the average american adult’s iq score had increased by 13.8 iq points in the cited period, translating to an average of roughly three points per decade. The average iq score for any age group is 100—the center of the “normal” range.

The average iq score for any age group is 100—the center of the “normal” range. Let’s check the list of average iq by state in america.