| Business | Phone |
| Guelph City Hall Office 59 Carden St, Guelph N1H 2Z9 | (519) 822-1260 |
| Guelph Finance Dept 59 Carden St, Guelph N1H 3A1 | (519) 837-5610 |
| Guelph Purchasing Dept 59 Carden St, Guelph N1H 3A1 | (519) 837-5611 |
| Guelph Transit 170 Watson Rd S, Guelph N1L 1C1 | (519) 822-1811 |
| Guelph West End Community Ctr 21 Imperial Rd S, Guelph N1K 1X3 | (519) 837-5618 |
| Guelph Personnel Dept 59 Carden St, Guelph N1H 3A1 | (519) 837-5601 |
| Guelph Fire Dept 50 Wyndham St S, Guelph N1H 4E1 | (519) 824-3232 |
| Guelph Child Care Resource Ctr 74 Woolwich St, Guelph N1H 3T9 | (519) 766-1550 |
| Guelph Parks Maintenance 69 Marilyn Dr, Guelph N1H 3Y8 | (519) 837-5626 |
| Guelph City Clerk's Offices 59 Carden St, Guelph N1H 2Z9 | (519) 837-5603 |
| Guelph Planning & Development 59 Carden St, Guelph N1H 3A1 | (519) 837-5616 |
| Guelph City Administrator Ofc 59 Carden St, Guelph N1H 3A1 | (519) 837-5602 |
| Guelph Engineering Dept 59 Carden St, Guelph N1H 3A1 | (519) 837-5604 |
| Guelph Sports & Entertainment 50 Woolwich St, Guelph N1H 3T9 | (519) 822-4900 |
| Guleph Health & Social Svc 74 Woolwich St, Guelph N1H 3T9 | (519) 837-2670 |
| Guelph Farmers Market 4 Gordon St, Guelph N1H 4G7 | (519) 836-1762 |
| Guelph Tax Dept 59 Carden St, Guelph N1H 3A1 | (519) 837-5605 |
| Guelph Victoria Road Arena 151 Victoria Rd N, Guelph N1E 5H4 | (519) 837-5621 |
| Guelph Westwood Recreation Ctr 495 Willow Rd, Guelph N1H 7C7 | (519) 837-5625 |
| Guelph Building Dept 59 Carden St, Guelph N1H 3A1 | (519) 837-5615 |
| Guelph Water Pollution Control 530 Wellington, Guelph | (519) 837-5629 |
| Guelph Child Care Ofc 74 Woolwich St, Guelph N1H 3T9 | (519) 837-3620 |
| Guelph Economic Development 59 Carden St, Guelph N1H 3A1 | (519) 837-5600 |
| Guelph Public Works Dept 45 Municipal St, Guelph | (519) 837-5628 |
| Guelph Willowdale Day Care 95 Willow Rd, Guelph N1H 1W4 | (519) 822-6010 |
| Guelph River Run Ctr 35 Woolwich St, Guelph N1H 3V1 | (519) 837-5662 |
| Guelph Fire Chief's Office 50 Wyndham St S, Guelph N1H 4E1 | (519) 824-6590 |
| Guelph Provincial Offences Ofc 36 Wyndham St S, Guelph N1H 7J5 | (519) 826-0762 |
| Guelph Water Works Maintenance 29 Waterworks Pl, Guelph N1E 6P7 | (519) 837-5627 |
| Mc Crae House 108 Water St, Guelph N1G 1A6 | (519) 836-1482 |
| Npst/City Of Guelph 21 Imperial Rd S, Guelph N1K 1X3 | (519) 837-5657 |
| Ontario Solicitor General Ofc 125 Delhi St, Guelph N1E 4J5 | (519) 837-6330 |
| Wellington Administration Ofc 74 Woolwich St, Guelph N1H 3T9 | (519) 837-2600 |
| Wellington Roads & Engineering 74 Woolwich St, Guelph N1H 3T9 | (519) 837-2601 |
| City Of Guelph Humane Society 500 Wellington St W, Guelph N1H 6L3 | (519) 824-3091 |