Visit School Website. Zip Code 60453. The Archdiocese of Chicago is the third largest diocese in the United States and serves more than 2.2 million Catholics in The Archdiocese, pastored by Cardinal Blase J. Cupich, has more than 15,000 employees across its ministries, including Catholic Charities, the region’s largest nonprofit social service agency. The Archdiocese also has one of the country’s largest seminaries. The Archdiocese’s elementary a...
