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Suffragan diocese Allentown, Pennsylvania, United States

Diocese of Allentown

Alanopolitan(us)

The Diocese of Allentown is a Latin Church diocese in the Lehigh Valley region of eastern Pennsylvania, established in 1961 and suffragan to the Archdiocese of Philadelphia. Bishop Alfred A. Schlert, installed in 2017, leads the diocese.

On the map

Esri
The address the register holds for Cathedral of Saint Catharine of Siena, in Allentown, United States.

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Established
1961
Catholics
205,000
Priests
210
Territory
7,182 km²

Parishes and churches

87 listed churches in our records. Open a parish for Mass times, confession, directions and sources where recorded.

This is our recorded coverage, not an official diocesan parish count. Confirm service times with the parish before travelling.

The bishop

Bishop
Alfred A. Schlert
Born
24 July 1961
Birthplace
Easton

Explore the ministry of the bishop.

The cathedral

Cathedral of Saint Catharine of Siena stands in Allentown, 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.

History

The Lehigh Valley region of Pennsylvania in the United States is home to the Catholic Diocese of Allentown (Latin: Diœcesis Alanpolitana), a suffragan see of the metropolitan Archdiocese of Philadelphia. Its territory takes in Berks, Carbon, Lehigh, Northampton and Schuylkill counties, and its mother church is the Cathedral Church of Saint Catharine of Siena in Allentown. Alfred A. Schlert serves as bishop. As of 2025 the diocese counted a registered population of 205,000 across 78 parishes.

This see in the wire

Stories that name this see

The wire's resolver matched this see in the text of each story.

  • Allentown Diocese begins annual blood drive on Sept. 19

    The Diocese of Allentown began its third annual blood drive on Sept. 19. The diocese is partnering with the Miller-Keystone Blood Center for the campaign, which coincides with the feast of St. Januarius. During the 2025 campaign, the partnership collected 821 units of blood, which was 40% more than the previous year, according to a diocesan press release. Bishop Alfred A. Schlert said that blood cannot be manufactured or replaced and must come from individuals willing to give to others. Monika Kotlarska-Gross, the director of donor relations at Miller-Keystone, stated that blood is perishable and has no substitute other than volunteer donors. The center noted that a national shortage has left most centers across the country with only a one or two-day inventory.

    Sep 23, 2026 · Life & Family · 2 sources

Filed by our own wire from published sources. Read the wire.