| Diocese | Ottawa |
| City | Parish (Catholic Population of the Parish) |
| Brightside | St. Declan (105) |
| Ottawa | Ste. Familie et Communaute Espagnola (206) |
| Ottawa | Holy Family Community (425) |
| Ottawa | Holy Korean Martyrs (425) |
| Pakeham | St. Peter Celestine (460) |
| Ottawa | Our Lady of Perpetual Help (550) |
| Ottawa | St. Leopold Mandic (750) |
| Nepean | St. Monica (900) |
| Saint Eugene | St. Eugene (928) |
| Ottawa | St. Brigid (970) |
| Ottawa | St. Albertus Pfarrgemeindre (1000) |
| Fitzroy Harbour | St. Michael (1200) |
| Ottawa | St. Peter (1200) |
| Ottawa | St. Jeanne Baptiste (1200) |
| Ottawa | St. Mary - Our Lady of Good Counsel (1400) |
| Ottawa | Blessed Sacrament (1427) |
| Ottawa | St. Basil (1650) |
| Ottawa | Holy Canadian Martyrs (1800) |
| Gloucester | St. Bernard (2000) |
| Vanier | Assumption of Blessed Virgin Mary (2040) |
| Almonte | Holy Name of Mary (2280) |
| Ottawa | Sacre Coeur (2500) |
| Ottawa | St. Hyacinth (2700) |
| Gloucester | St. Claude (4000) |
| Gloucester | Senhor Santo Christo (4000) |
| Ottawa | Ste. Anne (4500) |
| Ottawa | St, Theresa of the Child Jesus (5430) |
| Vanier | Notre Dame de Lourdes (6000) |
| Ottawa | St. Joseph (12280) |
| Constance Bay | St. Gabriel |
| Ottawa | Our Lady of La Vang |