As of 2003, the Roman Catholic Archdiocese of Chicago covers the City of Chicago as well as Cook and Lake counties, Illinois.

The Diocese of Chicago, erected on November 28,1843, was elevated to Archdiocese on September 10, 1880.

The following is a list of the Roman Catholic Bishops and Archbishops of the Diocese and Archdiocese of Chicago (and their terms of service).

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