| Business | Phone |
| Hardenburgh Board Of Elections Dry Brook Rd, Margaretville 12455 | (845) 586-3619 |
| Hardenburgh Supervisors Office Millbrook Rd, Margaretville 12455 | (845) 586-4108 |
| Margaretville Sewer Plant 41158 Route 28, Margaretville 12455 | (845) 586-1725 |
| Margaretville Village Mntnc 70 Church St, Margaretville 12455 | (845) 586-3700 |
| Middletown Supervisors Office 42339 State Highway 28, Margaretville 12455 | (845) 586-2462 |
| Middletown Transfer Station 46530 State Highway 30, Margaretville 12455 | (845) 586-4533 |
| Village Clerk Office 773 Main St # 1, Margaretville 12455 | (845) 586-4418 |