| Business | Phone |
| Lloyd A Stage Nature Ctr 6685 Coolidge Hwy, Troy 48098 | (248) 524-3567 |
| Troy City Municipal Cable Tv 500 W Big Beaver Rd, Troy 48084 | (248) 524-3559 |
| Troy City Offices 205 E 14 Mile Rd, Troy 48083 | (248) 588-2295 |
| Troy City Parks & Recreation 3179 Livernois Rd, Troy 48083 | (248) 524-3484 |
| Troy Engineering Dept 500 W Big Beaver Rd, Troy 48084 | (248) 524-3383 |
| Troy Purchasing Dept 500 W Big Beaver Rd, Troy 48084 | (248) 524-3338 |
| Troy Refuse & Recycling 4693 Rochester Rd, Troy 48085 | (248) 524-3399 |
| Troy Road Commission 1930 Stephenson Hwy, Troy 48083 | (248) 645-2000 |
| Building Dept 500 W Big Beaver Rd, Troy 48084 | (248) 524-3344 |
| Building Inspection 500 W Big Beaver Rd, Troy 48084 | (248) 689-5744 |
| City Of Troy 500 W Big Beaver Rd, Troy 48084 | (248) 524-3300 |
| City Of Troy- Human Resources 500 W Big Beaver Rd, Troy 48084 | (248) 524-3339 |
| City Planning 500 W Big Beaver Rd, Troy 48084 | (248) 524-3364 |
| Real Estate & Development 500 W Big Beaver Rd, Troy 48084 | (248) 524-3498 |