How many children have been diagnosed with ASD?

How many children in the United States have been diagnosed with Autism? As of July 2025, 1 in 31 children, approximately 2 million children. That's up from 1 in 34 children just a few years earlier. (source: https://scienceinsights.org/how-many-children-have-autism-in-the-us-1-in-31/)