| Business | Phone |
| County Pumps 100 County Seat Dr, Mineola 11501 | (516) 571-2255 |
| General Services Data Proc Div 1550 Franklin Ave # 205, Mineola 11501 | (516) 571-3085 |
| Nassau County Civil Svc Comm 140 Old Country Rd, Mineola 11501 | (516) 571-2000 |
| Nassau County General Svc Dept 1550 Franklin Ave, Mineola 11501 | (516) 571-4365 |