“CDC’s National Center on Birth Defects and Developmental Disabilities has been tracking ASDs for over a decade through the Autism and Developmental Disabilities Monitoring (ADDM) Network. The newest estimates from the ADDM Network are based on data collected in 14 areas of the United States during 2008. These 14 communities comprised over eight percent of the United States population of 8-year-olds in 2008. Information was collected on children who were 8 years old because previous work has shown that, by this age, most children with ASDs have been identified for services. CDC estimates 1 in 88 children (11.3 per 1,000) has been identified with an autism spectrum disorder (ASD).”

• Prevalence of Autism Spectrum Disorders — Autism and Developmental Disabilities Monitoring Network, 14 Sites, United States, 2008 –
  March 30, 2012

• Community Report From the Autism and Developmental Disabilities Monitoring (ADDM) Network, March 2012
• CDC estimates 1 in 88 children in United States has been identified as having an autism spectrum disorder
• Related postings on autism