| Business | Phone |
| Cobourg Water Filteration D'Arcy St, Cobourg | (905) 372-3612 |
| Golden Plough Lodge 983 Burnham St, Cobourg K9A 5J6 | (905) 372-8759 |
| Hamilton Administration Ofc Rr 4 Stn Main, Cobourg K9A 4J7 | (905) 342-2810 |
| Northumberland County Garage Veronica St, Cobourg K9A 4J9 | (905) 372-5521 |
| Ontario Northumberland Housing 860 William St, Cobourg K9A 3A9 | (905) 372-3329 |
| Victoria Park Trailer Camp 19 Charles St, Cobourg K9A 2T4 | (905) 373-7321 |
| Cobourg Transit 67 Veronica St, Cobourg K9A 4J9 | (905) 373-0582 |
| Cobourg Public Utilities 207 Division St, Cobourg K9A 3P6 | (905) 372-2193 |
| Cobourg Tourism 212 King St W, Cobourg K9A 2N1 | (905) 372-5481 |
| Cobourg Marina 103 Third St, Cobourg | (905) 372-2397 |
| Cobourg Engineering 55 King St W, Cobourg K9A 2M2 | (905) 372-4555 |
| Cobourg Clerks Office 55 King St W, Cobourg K9A 2M2 | (905) 372-4301 |
| Cobourg Building Dept 55 King St W, Cobourg K9A 2M2 | (905) 372-1005 |
| Cobourg Arena 206 Furnace St, Cobourg K9A 2G1 | (905) 372-7371 |
| Cobourg Parks & Recreation 6 Ewart St #2, Cobourg K9A 2M2 | (905) 372-8641 |
| Cobourg Family Ymca 339 Elgin St W, Cobourg K9A 4X5 | (905) 372-0161 |
| Cobourg Water Pollution Plant 420 King St W, Cobourg K9A 2N7 | (905) 372-7332 |
| Cobourg Greenhouse 95 Normar Rd Rr 5, Cobourg K9A 4J8 | (905) 372-1438 |
| Cobourg Water Pollution Plant 95 Normar Rd Rr 5, Cobourg K9A 4J8 | (905) 372-5539 |