Autism: By The Numbers
The latest statistics
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.