| Business | Phone |
| Grace Community Church 16 Hillside Crt, St Marys N4X 1B8 | (519) 284-1060 |
| Holy Name Of Mary Parish 149 King St N, St Marys N4X 1B4 | (519) 284-2593 |
| First Baptist Church 34 Church St S, St Marys N4X 1B5 | (519) 284-1758 |
| Salvation Army 220 Queen St E, St Marys N4X 1A9 | (519) 284-2760 |
| St James Anglican Church 65 Church St S, St Marys N4X 1B8 | (519) 284-1147 |
| St Marys Pentecostal Assembly 14 Church St N, St Marys N4X 1C3 | (519) 284-2607 |
| St Marys Presbyterian Church 147 Widder St E, St Marys N4X 1B1 | (519) 284-2620 |
| United Church 85 Church St S, St Marys N4X 1B3 | (519) 284-3016 |
| Wellburn Pastoral Charge 23574 Wellburn Rd, St Marys N4X 1C6 | (519) 461-1013 |