| Business | Phone |
| Jefferson County Court Clerk 163 Arsenal St, Watertown 13601 | (315) 785-3044 |
| Jefferson County Family Court 175 Arsenal St # 5, Watertown 13601 | (315) 785-3001 |
| Jefferson County Judge's Chmbr 195 Arsenal St, Watertown 13601 | (315) 785-3010 |
| Jefferson County Supreme Court 317 Washington St, Watertown 13601 | (315) 785-7906 |