Post office locations in 11423
| Post Office | Address | Phone | Hours |
| HOLLIS | 19740 JAMAICA AVE HOLLIS, NY 11423 - 9997 | 718-465-8313 | Mon-Fri 08:30 AM - 05:00 PM Sat 08:30 AM - 01:00 PM Sun Closed |
| HOLLISWOOD | 19733 HILLSIDE AVE HOLLIS, NY 11423 - 9993 | 718-465-4808 | Mon-Fri 09:00 AM - 04:30 PM Sat-Sun Closed |