Autism Society of America

Based in Rockville, Maryland -- Covers: National

Founded in 1965 and, by its own description, the oldest and largest grassroots autism organisation in the US. Runs a national helpline and a network of local affiliates, so the useful first step is usually to find the affiliate covering your area rather than to start nationally.

Sourced from public research on 2026-09-13 -- not independently verified. Please confirm details directly with the provider before making decisions. Source