Keystone Human Services is a nonprofit organization committed to serving the community. Keystone is committed to creating an environment where all people can grow, make choices, and be valued and contributing members of society. Keystone provides comprehensive community-based services for children, young people, adults and families in the areas of intellectual disabilities (mental retardation), autism, mental health, early intervention and children and family services. Keystone serves individuals and families in Pennsylvania, Maryland, Delaware and Connecticut. Keystone Human Services is also engaged in initiatives in Russia and Moldova.