According to a 2008 survey by the Center For Disease Control (CDC), here is what the autism picture looks like in Pennsylvania:

• 1 in 45 boys is diagnosed with an autism spectrum disorder (ASD).
• 1 in 233 girls is diagnosed with ASD.
• The total prevalence in Pennsylvania’s children is 1 in 75.
• The national prevalence of ASD diagnoses is about 1 in 68 children.
• Approximately 1 in 6 children is diagnosed with some form of developmental disability.

Source: http://www.cdc.gov/ncbddd/autism/states/ADDM-Pennsylvania-fact-sheet.pdf