| ORIGIN DATE | PARISH NAME | LOCATION |
| 1821 | St. James | West Alexander |
| 1855 | Immaculate Conception | Washington |
| 1865 | Transfiguration | Monongahela |
| 1875 | Sacred Heart | Claysville |
| 1888 | St. Thomas Aquinas | California |
| 1891 | St. Patrick | Canonsburg |
| 1892 | St. Alphonsus | McDonald |
| 1892 | St. Jerome | Charleroi |
| 1893 | St. Francis Of Assisi | Finleyville |
| 1901 | Ss. Cyril & Methodius | Charleroi |
| 1902 | St. Dominic | Donora |
| 1902 | St. Charles | Donora |
| 1902 | Holy Name Of The B.V.M. | Donora |
| 1902 | Mother Of Sorrows | Charleroi |
| 1903 | St. Luke | Bentleyville |
| 1904 | St. Anthony | Monongahela |
| 1904 | St. Joseph | Roscoe |
| 1906 | St. Joseph | Donora |
| 1909 | St. Mary | Cecil |
| 1912 | Ss. Peter & Paul | Cherry Valley |
| 1913 | St. Mary | Daisytown |
| 1914 | St. Clement | Ellsworth |
| 1916 | Our Lady Of Lourdes | Burgettstown |
| 1916 | St. Ann | Bulger |
| 1917 | St. Michael | Avella |
| 1917 | St. Genevieve | Canonsburg |
| 1919 | St. Hilary | Washington |
| 1920 | St. Elizabeth | Lawrence |
| 1923 | St. Philip Neri | Donora |
| 1923 | St. Joseph | Cokeburg |
| 1937 | Assumption | Daisytown |
| 1943 | Guardian Angels | Southview |
| 1950 | St. Isaac Jogues | Elrama |
| 1953 | Our Lady Miraculous Medal | Meadowlands |
| 1960 | St. Agnes | Richeyville |
| 1962 | St. Benedict The Abbot | Peter's Twp |
| 1963 | Holy Rosary | Muse |
| 1992 | Our Lady Of The Valley | Donora |
| 1992 | Mary Mother Of The Church | Charleroi |
| 1993 | St. Patrick | Canonsburg |
| 1994 | Ave Maria | Ellsworth |