| Business | Phone |
| Millis Building & Wiring 900 Main St, Millis 2054 | (508) 376-7044 |
| Millis Health & Nursing Svc 900 Main St, Millis 2054 | (508) 376-7042 |
| Millis Historical Commission 410 Exchange St, Millis 2054 | (508) 376-3730 |
| Millis Planning Board 900 Main St, Millis 2054 | (508) 376-7045 |
| Millis Town Accountant 900 Main St, Millis 2054 | (508) 376-7039 |
| Millis Town Hessco 900 Main St, Millis 2054 | (508) 376-7056 |
| Millis Town Rooms & Selectmen 900 Main St, Millis 2054 | (508) 376-7040 |
| Millis Transfer Station 7 Water St, Millis 2054 | (508) 376-8603 |