Post office locations in 11423
| Post Office | Address | Phone | Hours |
| HOLLIS | 19740 JAMAICA AVE HOLLIS, NY 11423 - 9997 | 718-465-8313 | Mon-Fri 8:30am - 5:00pm Sat 8:30am - 1:00pm Sun Closed |
| HOLLISWOOD | 19733 HILLSIDE AVE HOLLIS, NY 11423 - 9993 | 718-465-4808 | Mon-Fri 9:00am - 4:30pm Sat-Sun Closed |