Homefirst which is a very large medical group in Chicago that lets parents make the choice about vaccines. Consequently they have many kids who are not vaccinated. Amoungst those kids, they have no child who has autism.
There is also a parents group in Austria who keeps track of non-vaccinated kids throughout Europe and they have collected information from over 800 kids, none have autism.
Dan Olmstead has collected information from the Amish, who also have no autism in their non-vaccinated kids.