Located in Connecticut, Key Human Services creates opportunities for people with disability to grow and make meaningful life choices while living, working, and building relationships within their community. Key offers Nursing Services, Community Living Arrangements, and Individual and Family Supports.

Keystone Human Services International contributes to the global conversation around disability rights through advocating for the implementation of the UN Convention on the Rights of Persons with disabilities, supporting the change movement being driven by people with disabilities, and engaging with partners around the world to ensure no one is left behind.

The Keystone Partnership provides charitable support and builds community relationships around Keystone Human Services’ mission. The Partnership focuses on fundraising, developing community partnerships, financial support, and communications.

Keystone Service Systems (KSS) is the largest of KHS’s subsidiary corporations, designed to ensure continuity of support across various comprehensive systems of care. KSS includes Intellectual Disability Services in Pennsylvania and Delaware, Autism Services, Mental Health Services, Capital Area Head Start, and Susquehanna Service Dogs.

Mainstay Life Services is an affiliate of Keystone Human Services, based in Pittsburgh, PA. Founded in 1971, Mainstay supports people with intellectual disability and autism to live their best lives as they choose. Through person-centered supports and community programs, Mainstay empowers people to achieve their goals and champion their rights.

Located in New Jersey, Partnerships for People provides person-directed services around home, work, and active participation in the community for people with intellectual disability and autism. Services include Residential and Community Living, Community-Based Supports, Supported Employment, and Transportation.