| Business | Phone |
| Charlton Accessors Office 37 Main St # 2, Charlton 1507 | (508) 248-2054 |
| Charlton Building Commissioner 37 Main St, Charlton 1507 | (508) 248-2241 |
| Charlton Little League Cemetery Rd, Charlton 1507 | (508) 248-2064 |
| Charlton Planning Board 37 Main St, Charlton 1507 | (508) 248-2237 |
| Charlton Selectmen 37 Main St, Charlton 1507 | (508) 248-2206 |
| Charlton Senior Center Charlton 1507 | (508) 248-2231 |
| Charlton Town Dog Officer Charlton 1507 | (508) 248-0097 |
| Charlton Town Engineer Charlton 1507 | (508) 248-2229 |
| Charlton Town Senior Ctr 37 Main St, Charlton 1507 | (508) 248-4388 |
| Charlton Town Sewer Office 71 Worcester Rd, Charlton 1507 | (508) 248-4953 |
| Charlton Veteran's Svc 37 Main St, Charlton 1507 | (508) 248-2244 |