| Churches |
- Cathedral
- St. Augustine Cathedral
- Basilica
- Basilica of Saint John the Evangelist, Stamford
- Parishes
- St. Agnes, Greenwich
- St. Anthony of Padua, Fairfield
- St. Benedict-Our Lady of Montserrat, Stamford
- Blessed Sacrament, Bridgeport
- St. Bridget of Ireland, Stamford
- St. Catherine of Siena, Riverside
- St. Catherine of Siena, Trumbull
- St. Cecilia, Stamford
- St. Charles Borromeo, Bridgeport
- Christ the King, Trumbull
- St. Clement of Rome, Stamford
- SS. Cyril and Methodius, Bridgeport
- St. Gabriel, Stamford
- St. George, Bridgeport
- St. Gregory the Great Church, Danbury
- Holy Family, Fairfield
- Holy Name of Jesus, Stamford
- Holy Name of Jesus, Stratford
- Holy Spirit, Stamford
- Immaculate Heart of Mary, Danbury
- St. James, Stratford
- St. Jerome, Norwalk
- St. John, Darien
- St. Joseph, Brookfield
- St. Joseph, Danbury
- St. Joseph, South Norwalk
- St. Ladislaus, South Norwalk
- St. Lawrence, Shelton
- Saint Margaret Shrine, Bridgeport
- St. Marguerite Bourgeoys, Brookfield
- St. Mark, Stratford
- St. Mary, Bridgeport
- St. Mary, Greenwich
- St. Mary, Norwalk
- St. Mary, Stamford
- St. Matthew, Norwalk
- St. Maurice, Stamford
- St. Michael the Archangel, Bridgeport
- Notre Dame, Easton
- Our Lady of Grace, Stratford
- Our Lady of Guadalupe, Danbury
- Our Lady of Peace, Stratford
- Our Lady of the Assumption, Fairfield
- Our Lady of the Assumption, Westport
- Our Lady Star of the Sea, Stamford
- St. Paul, Greenwich
- St. Peter, Bridgeport
- St. Peter, Danbury
- St. Philip, Norwalk
- St. Pius X, Fairfield
- St. Roch, Greenwich
- St. Rose of Lima, Newtown
- Sacred Heart, Georgetown
- Sacred Heart, Greenwich
- Sacred Heart, Stamford
- Sacred Heart of Jesus, Danbury
- St. Stephen, Trumbull
- St. Theresa, Trumbull
- St. Thomas Aquinas, Fairfield
- St. Thomas the Apostle, Norwalk
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