| Village Hall | 482-3110 | |
| Village Hall after hours emergency number | 779-3851 | for public works emergencies only |
| Police emergencies | 911 | |
| Police - 6th Precinct | 573-6600 | 100 Community Drive, Manhasset |
| Fire & Ambulance: | ||
| North of LIRR tracks | 482-5000 | Vigilant Fire Company |
| South of LIRR tracks | 466-4411 | Manhasset Lakeville Fire District |
| PSEG | 800-490-0075 | to report electric outages or downed wires |
| National Grid | 800-490-0045 | for gas emergencies |
| Water Departments: | ||
| North of LIRR tracks | 487-7973 | Water Authority of Great Neck North |
| South of LIRR tracks | 466-4413 | Manhasset Lakeville Water District |
| Sewer Departments: | ||
| Great Neck Water Pollution Control | 482-0238 | |
| Belgrave Sewer | 487-2759 | Belgrave residents only |
| Optimum | 866-950-3278 | for cable/internet outages |
| Verizon | 800-VERIZON | for landline outages |
| 800-922-0204 | for wireless outages | |
| Nassau County Office of Emergency Management | 573-0636 |