MH/IDD administers publicly-funded services for Chester County children with developmental delays, county residents in mental illness recovery, or residents with intellectual disability. The budget includes federal, state, and county funds.

The Administration Unit focuses on planning and developing services, administering vendor contracts, and overseeing service quality.  Staff in the unit work with a variety of other county and community groups and organizations to promote the efficient and effective delivery of services.  The unit is responsible for program planning, contract oversight, service monitoring, invoice processing, and information management.