| Business | Phone |
| Sullivan County Attorney's Ofc 14 Main St, Newport 3773 | (603) 863-7950 |
| Sullivan County Co-Op Ext Svc 24 Main St, Newport 3773 | (603) 863-9200 |
| Sullivan County Commissioner 14 Main St, Newport 3773 | (603) 863-2560 |
| Sullivan County Disposal Dist Newport Rd, Newport 3773 | (603) 543-1309 |
| Sullivan County Registry-Deeds 14 Main St, Newport 3773 | (603) 863-2110 |
| Sullivan County Registry-Prbt 14 Main St, Newport 3773 | (603) 863-3150 |
| Sullivan County Victim Witness 14 Main St, Newport 3773 | (603) 863-8345 |