The figure shows the most recent intelligence quotient (IQ) as of age 8 years among children identified with autism spectrum disorders (ASDs) for whom psychometric test data were available. N=1,981. Data are displayed by site and sex for seven U.S. sites participating in the Autism and Developmental Disabilities Monitoring Network for 2008. These sites are those that had IQ scores available for at least 70% of the children in their areas who met the ASD case definition. When data from these seven sites were combined, 38% of children with ASDs were classified in the range of intellectual disability (i.e., IQ ≤70 or an examiner's statement of intellectual disability), 24% in the borderline range (IQ 71–85), and 38% had IQ scores >85 or an examiner's statement of average or above-average intellectual ability. The proportion of children classified in the range of intellectual disability ranged from 13% in Utah to 54% in South Carolina. The two sites with the highest proportions of children classified above the range of intellectual disability (IQ >70) were Utah (87%) and New Jersey (73%).