Autism is relatively common. According to the Centers for Disease Control and Prevention (CDC), approximately 1 in 31 children in the United States age 8 and younger are diagnosed with autism spectrum disorder. Boys are four times more likely to be diagnosed with autism than girls. Autism rates are consistent across racial, ethnic, and socioeconomic groups.1

The number of autism diagnoses has grown over the years. This is partly because people are more aware, doctors have better tools to diagnose, and the definition of autism has expanded. As a result, more children are being identified and getting the support they need! 

https://www.cdc.gov/autism/data-research/index.html