| Business | Phone |
| Town Engineer 60 Prospect St, Ridgefield 6877 | (203) 431-2751 |
| Town Finance 400 Main St, Ridgefield 6877 | (203) 431-2716 |
| Town Health 66 Prospect St, Ridgefield 6877 | (203) 431-2745 |
| Town Mapping 60 Prospect St, Ridgefield 6877 | (203) 431-2752 |
| Town Personnel 400 Main St, Ridgefield 6877 | (203) 431-2775 |
| Town Probate 400 Main St, Ridgefield 6877 | (203) 431-2776 |
| Town Selectman 400 Main St, Ridgefield 6877 | (203) 431-2774 |
| Transfer Station 55 South St, Ridgefield 6877 | (203) 431-4137 |
| Building Office 66 Prospect St, Ridgefield 6877 | (203) 431-2743 |
| Social Services 400 Main St, Ridgefield 6877 | (203) 431-2777 |
| Canine Control 40 South St, Ridgefield 6877 | (203) 431-2711 |
| Senior Center 193 Danbury Rd, Ridgefield 6877 | (203) 431-2764 |
| Ridgefield Barn Ridgefield 6877 | (203) 894-1618 |
| Ridgefield Recycling Ctr 55 South St, Ridgefield 6877 | (203) 431-2343 |
| Ridgefield Safety Director 400 Main St, Ridgefield 6877 | (203) 431-2720 |
| Ridgefield Sewer Adm 60 Prospect St, Ridgefield 6877 | (203) 431-2734 |
| Ridgefield Tree Warden 60 South St, Ridgefield 6877 | (203) 431-2358 |
| Registrar Of Voters 400 Main St, Ridgefield 6877 | (203) 431-2771 |
| Data Processing 400 Main St, Ridgefield 6877 | (203) 431-2714 |
| Department Of Public Svc 60 South St, Ridgefield 6877 | (203) 431-2748 |
| Parking Authority 400 Main St, Ridgefield 6877 | (203) 431-2765 |
| General Information 400 Main St, Ridgefield 6877 | (203) 431-2700 |