| Business | Phone |
| Dunwich Municipal Office 156 Main, Dutton N0L 1J0 | (519) 762-2204 |
| Dunwich Township Garage 136 Main, Dutton N0L 1J0 | (519) 762-2748 |
| Dutton Community Ctr 1 Erie, Dutton N0L 1J0 | (519) 762-3209 |
| Dutton Public Library 36 Shackleton St, Dutton N0L 1J0 | (519) 762-2780 |
| Dutton Public Utilities Comm 199 Main, Dutton N0L 1J0 | (519) 762-2717 |