Post office locations in 11557
| Post Office | Address | Phone | Hours |
| HEWLETT | 1245 HEWLETT PLZ HEWLETT, NY 11557 - 2037 | 516-374-0973 | Mon-Fri 9:00am - 5:00pm Sat 9:00am - 1:00pm Sun Closed |
| Post Office | Address | Phone | Hours |
| HEWLETT | 1245 HEWLETT PLZ HEWLETT, NY 11557 - 2037 | 516-374-0973 | Mon-Fri 9:00am - 5:00pm Sat 9:00am - 1:00pm Sun Closed |