The decision to close St. Joseph Parish in Dyer is part of a wave of Catholic parish consolidations sweeping across the United States. Since 2010, the American Church has lost roughly 1,600 parishes — concentrated heavily in the Northeast and Rust Belt, including the Diocese of Gary’s neighbors in Chicago, Joliet, Detroit, and Cleveland.
The map below tracks every territorial Catholic diocese in the country. Hover over any diocese to see exact parish counts in 2010 and the most recent year on record, and the net change in between.
Since 2010, the Archdiocese of Chicago has lost 136 parishes — more than any other diocese in America. Pittsburgh has lost 101. Hartford 99. Buffalo 76. Detroit 64. The Diocese of Gary is one of dozens of Midwest sees making the same painful decisions.
The pattern is not driven by Catholic decline alone. It reflects priest shortages, demographic shifts, and consolidation strategies that have made parish closures the default response — even in communities where the laity stand ready to fund maintenance and operations themselves.
This is exactly the situation St. Joseph faces.
While the North contracts, dioceses across the South are adding parishes. San Antonio gained 26 since 2010. Birmingham +17. Pensacola-Tallahassee +14. Tyler, Texas +9. Denver, Atlanta, and Charlotte are all in the green.
The Catholic population has not disappeared from America — it has shifted. Communities that organize, raise funds, and exercise their canonical rights can preserve their churches even where the broader trend runs against them.
That is the case the Friends of St. Joseph Dyer Church is making to the Bishop of Gary — and to the Vatican, if necessary.
Sourced from the official Annuario Pontificio (the Vatican’s yearly directory) and the Center for Applied Research in the Apostolate at Georgetown University.
Parish counts come from catholic-hierarchy.org, which mirrors the Vatican’s Annuario Pontificio — the same statistical record CARA at Georgetown publishes annually. Boundary geometry is from the open-source us_diocese_mapper project.
The 2010 anchor year is exact for 92 dioceses. For dioceses where the Vatican did not publish data exactly in 2010, we linearly interpolate between the nearest available years before and after — a method that mirrors how CARA reports decade-over-decade change.
A “closed” parish is usually merged into a neighboring one rather than physically destroyed — many buildings remain open as worship sites, are sold, or sit unused. Eastern Catholic eparchies overlay other dioceses and are excluded from the map. Latest year per diocese ranges 2022–2024.
The dioceses on this map made closure decisions that, in many cases, the laity were never given a chance to challenge. We are giving Dyer that chance — through the canonical appeal process, through community fundraising, and through the formation of a 501(c)(3) Preservation Society that can fund this church for decades to come.
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