Archdiocese of Chicago

The Archdiocese of Chicago is a major religious institution and one of the largest Catholic dioceses in the United States, serving over 2 million Catholics in Cook and Lake counties. While primarily a spiritual and ecclesiastical entity, it maintains a significant presence in the healthcare and social services sectors through its oversight of Catholic Charities of the Archdiocese of Chicago. Historically, the Archdiocese was instrumental in founding numerous hospitals in the Chicago area, many of which have since transitioned into larger secular or multi-institutional Catholic healthcare systems like Ascension and CommonSpirit Health. The organization focuses on community welfare, education, and spiritual guidance rather than biotechnology or pharmaceutical development.