CSO, Inc. provides information, eligibility determination, service arrangement and service coordination to people, regardless of age, income, gender and language. Its service population resides within the City of Chicago’s south-side and west-side communities (see map).

CSO, Inc. serves individuals who have developmental disabilities. Developmental disabilities include diagnoses, prior to age 22, of mental retardation (cognitive impairments) and related conditions such as autism, cerebral palsy and epilepsy, that substantially impair individuals’ abilities to learn, communicate and function without assistance.