Autism: By The Numbers

Increase in people with autism served by regional centers between 1987 (2,701) and 2007 (34,656). 

Average age at which autism is diagnosed. The earliest symptoms aren't detected for 6 to 12 months.

Ratio of males to females with autism who are in California’s department of developmental services system.

People in California with an autism spectrum disorder who lived in the home of a parent in 2007.