| Business | Phone |
| Monticello Bldg & Ground Dept 2 Pleasant St, Monticello 12701 | (845) 791-6202 |
| Monticello Juvenile Relations 18 Pleasant St, Monticello 12701 | (845) 794-0887 |
| Monticello Sewer Dept Waverly Ave, Monticello 12701 | (845) 794-5920 |
| Monticello Village Clerk 2 Pleasant St, Monticello 12701 | (845) 794-6130 |
| Monticello Village Justice Ct 18 Pleasant St, Monticello 12701 | (845) 794-1222 |
| Ski Area Holiday Mountain 99 Holiday Mountain Rd, Monticello 12701 | (845) 796-3161 |
| Thompson Town Office 216 Old Route 17, Monticello 12701 | (845) 794-7855 |