The study shows the diagnoses of autism disorders have risen 15 percent in two years.
Now, 1 in 59 children are on the autism spectrum compared to 1 in 68 just a few years ago.
Research shows that autism is more common in white children, but it also shows a significant increase in the diagnoses in black and Hispanic children.
Experts say diagnosing autism early is important. Autism can be diagnosed as early as age two.