Generally, the cities have more programs for children with special needs.
What we have here is a program called "Birth to Three". It's a state program where a private agency case worker comes into home to analyze and diagnose a child's development through the first three years, in order to begin documentation for special services. It's free who people who can financially qualify. For example, with the proper documentation, there are special pre-school programs in my city of New Britain, with special busing services and classrooms for ages 3 until kindergarten where the goal is to mainstream the child. The educators and para-professionals are specially trained, and there might be as many as 8 children in a classroom.
Everything from there really depends on the severity of the autism. I knew a family with a mildly autistic elementary child that had difficulties receiving much more than some extra tutoring services during the day, along with counseling when needed. Other children who have more severe problems may be able to request having their child sent to a special private school program paid for by the city, but usually located out of town. But because of the expense, it's not something that's often readily agreed upon by the school district unless it's more obviously necessary & the need is provable. There is a formal hearing process if there is a challenge to the request. And some larger cities may have 1 or 2 dozen children placed in special learning facilites. It really depends on whether the child can be mainstreamed and what's deemed to be in the best interest of the student based on all of the documentation.
There are other programs for adults with autism run by the State DMR and by local agencies.
These agencies may also be able to help provide you with more information, and are mentioned in this other thread:
http://www.city-data.com/forum/conne...s-special.html