| Business | Phone |
| Building Dept 17 Bedford Rd, Armonk 10504 | (914) 273-8625 |
| North Castle Bldg Inspector 17 Bedford Rd, Armonk 10504 | (914) 273-3714 |
| North Castle Engineering 17 Bedford Rd, Armonk 10504 | (914) 273-8626 |
| North Castle Engineering 200 Business Park Dr, Armonk 10504 | (914) 273-2323 |
| North Castle Hwy Garage 21 Bedford Rd, Armonk 10504 | (914) 273-3561 |
| North Castle Planning Board 17 Bedford Rd, Armonk 10504 | (914) 273-3542 |
| North Castle Receiver Of Taxes 17 Bedford Rd, Armonk 10504 | (914) 273-6620 |
| North Castle Senior Citizens 17 Bedford Rd, Armonk 10504 | (914) 273-1771 |
| North Castle Sewer & Water Dis 115 Business Park Dr, Armonk 10504 | (914) 273-1882 |
| North Castle Town Supervisor 15 Bedford Rd, Armonk 10504 | (914) 273-3001 |