| St. Catharines | Diocese | Legend | |||
| (H) Indicates Home Parish | |||||
| (*) Round Table Formed in Previous Years | |||||
| (123) Catholic Population | |||||
| Council | District | Parishes | Parish Names | Round Table 2005-2006 | |
| 1394 | 6 | 3 | St. Thomas Aquinas (1575) | ||
| St. Julia (2000) | |||||
| St. Denis (5500) | |||||
| 1652 | 64 | 7 | Sacred Heart (1000) | ||
| St. Vincent de Paul (1000) | |||||
| Our Lady of Peace (1500) | |||||
| St. Ann (2500) | |||||
| St. Patrick (4300) | |||||
| Our Lady of the Scapular (5000) | |||||
| St. Thomas More (6000) | |||||
| 2146 | 26 | 6* | St. Augustine (220) | ||
| Our Lady of Hungary (550) | |||||
| Sts. Peter and Paul (1100) | |||||
| St. Andrew (1500) | |||||
| St. Alexander (1650) * | |||||
| St. Kevin (9000) | |||||
| 2319 | 64 | 2 | St. Patrick (1750) | ||
| Holy Rosary (7000) - H | |||||
| 3320 | 64 | 3 | St. Joseph - Stevensville (350) | ||
| St. George (950) | |||||
| St. Michael (3000) | |||||
| 3732 | 26 | 5* | St. Jean de Brebeuf (650) * | ||
| St. Elizabeth (750) * | |||||
| St. Patrick (1000) * | |||||
| St. John Bosco (2000) * | |||||
| St. Teresa of Lisieux (3500) * | |||||
| 4917 | 6 | 3 | St. Helen (750) | ||
| St. Martin of Tours (950) | |||||
| St. Joseph (3500) | |||||
| 6091 | 6 | 2 | St. Ann (500) | ||
| Our Lady of Lourdes (750) - H | |||||
| 7741 | 6 | 2 | Immaculee Conception (1250) - H | ||
| St. Alfred (9000) | |||||
| 9222 | 6 | 2* | Star of the Sea (1250) * | ||
| St. Catherine - Cathedral (1500) - H | |||||
| 10503 | 26 | 2 | St. Anthony (350) | ||
| St. Mary of the Assumption (2200) | |||||