Post office locations in 11740
| Post Office | Address | Phone | Hours |
| GREENLAWN | 55 BROADWAY GREENLAWN, NY 11740 - 1337 | 631-261-6437 | Mon-Fri 9:00am - 5:00pm Sat 9:00am - 1:00pm Sun Closed |
| Post Office | Address | Phone | Hours |
| GREENLAWN | 55 BROADWAY GREENLAWN, NY 11740 - 1337 | 631-261-6437 | Mon-Fri 9:00am - 5:00pm Sat 9:00am - 1:00pm Sun Closed |