Catholic Intelligence

Diocese of Joliet in Illinois

Iolietten(sis) in Illinois

The Diocese of Joliet in Illinois is a Latin Church diocese covering seven counties in northeastern Illinois, erected in 1948. The see is currently vacant, with Bishop Dennis E. Spies serving as Apostolic Administrator after Ronald A. Hicks was named Archbishop of New York in early 2026.

The see

Rank
Suffragan diocese
Tradition
Latin Church
Erected
11 December 1948
Latin
Iolietten(sis) in Illinois
Patron
St. Francis Xavier
Annuario code
001001752

The see in figures

Catholics
520,148
Population
1,961,747
Catholic share
26.5%

of the people living within its bounds

Priests
267
Catholics per priest
1,948
Extent
10,925 km²
Catholics per km²
48

Figures as recorded in the register, from the Annuario Pontificio and the see's own published statements. Shares and ratios are computed from the two figures shown beside them.

The bishop

Apostolic Administrator
Dennis E. Spies (Apostolic Administrator)
Born
5 March 1968
Birthplace
Clifton

A see whose chair stands empty is recorded as vacant rather than filled with a guess. On what a bishop is, see the bishop.

The cathedral

Cathedral of St. Raymond Nonnatus stands in Joliet, the church that holds the cathedra from which this see takes its name.

On what a cathedral is, see the cathedral; every see church on earth is gathered at the cathedrals.

The province of Chicago

A suffragan of Archdiocese of Chicago.

The sees of this province:

On how the Church is ordered into provinces, see the diocese.

What is kept by invitation

The record above is published because it is public: what this see is, when it was erected, who holds its chair, and where it stands among its neighbours.

The working record is not. The chancery's address, telephone and email, the clergy of the see, and the hours of Mass, confession and adoration in the parishes within it are kept for members, and a person reads every request.

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Sources

The see's own website · Wikipedia

This record is compiled from the published statements of the see and the references of the Holy See, among them the Annuario Pontificio. On the method, see the keeping of the record. Whoever finds an error is asked, in charity, to write: [email protected].