how many kids have autism

As of the most recent data, approximately 1 in 31 children in the United States has autism spectrum disorder (ASD), which is about 3.2%. This estimate comes from the CDC's Autism and Developmental Disabilities Monitoring (ADDM) Network from 2022 data and represents children aged 8 years. The prevalence varies across different states and demographic groups, with autism being about 3.4 times more common in boys than girls. Globally, the prevalence is estimated around 1 in 127 people as of 2021, though rates can vary by region and study methods.