Post office locations in 11740
| Post Office | Address | Phone | Hours |
| GREENLAWN | 55 BROADWAY GREENLAWN, NY 11740 - 1337 | 631-261-6437 | Mon-Fri 09:00 AM - 05:00 PM Sat 09:00 AM - 01:00 PM Sun Closed |
| Post Office | Address | Phone | Hours |
| GREENLAWN | 55 BROADWAY GREENLAWN, NY 11740 - 1337 | 631-261-6437 | Mon-Fri 09:00 AM - 05:00 PM Sat 09:00 AM - 01:00 PM Sun Closed |