11731 Post Office

Find 11731 post offices and USPS mailing boxes. Post offices provide information on bulk mail services, domestic mail delivery, international shipping, change of address, mail forwarding, PO boxes, and passport services.


East Northport Post Office 297 Larkfield Road East Northport NY 11731 631-368-5632


Greenlawn Post Office 55 Broadway Greenlawn NY 11740 2.6 miles from 11731 631-261-6437

Commack Post Office 150 Veterans Memorial Highway Commack NY 11725 2.7 miles from 11731 631-543-3647

Northport Post Office 240 Main Street Northport NY 11768 3.1 miles from 11731 631-261-6941

Centerport Post Office 434 East Main Street Centerport NY 11721 3.3 miles from 11731 631-261-6918

Huntington Station Post Office 888 East Jericho Turnpike Huntington Station NY 11746 3.7 miles from 11731 631-427-0594

Kings Park Post Office 125 East Main Street Kings Park NY 11754 4.1 miles from 11731 631-269-6481

Hauppauge Industrial Park Post Office 150 Oser Avenue Hauppauge NY 11788 4.6 miles from 11731 631-231-3155

Halesite Post Office 16 New York Avenue Huntington NY 11743 5.4 miles from 11731 631-423-5880

Huntington Post Office 55 Gerard Street Huntington NY 11743 5.9 miles from 11731 631-427-3825

Melville Post Office 718 Walt Whitman Road Melville NY 11747 6.3 miles from 11731 631-421-0726

Hauppauge Post Office 960 Wheeler Road Hauppauge NY 11788 6.4 miles from 11731 631-360-6712

Smithtown Post Office 25 Route 111 Smithtown NY 11787 6.8 miles from 11731 631-360-6709

Deer Park Post Office 375 Carlls Path Deer Park NY 11729 7.0 miles from 11731 631-667-6490

Cold Spring Harbor Post Office 126 Main Street Cold Spring Harbor NY 11724 7.4 miles from 11731 631-692-5307

Brentwood Post Office 25 2nd Street Brentwood NY 11717 7.4 miles from 11731 631-273-0947

Wyandanch Post Office 1569 Straight Path Wyandanch NY 11798 7.9 miles from 11731 631-643-3914

Wheatley Heights Post Office 6 Colonial Springs Road Wheatley Heights NY 11798 7.9 miles from 11731 631-643-3913

Central Islip Post Office 110 East Suffolk Avenue Central Islip NY 11722 8.0 miles from 11731 631-234-0547

Woodbury Post Office 217 Woodbury Road Woodbury NY 11797 8.2 miles from 11731 516-692-5470

What Change of Address options are available?

Customers can request a temporary or permanent Change of Address either online or in person at the Post Office using PS Form 3575. The online application for Change of Address has a $1.00 identity validation fee.

Is it possible to insure mail and items sent via the USPS?

Yes. Standard mail can be insured for up to $5,000 for an additional fee. Registered mail items can be insured for up to $50,000.

What is the USPS Office of Inspector General?

The Office of Inspector General (OIG) is a division within the USPS responsible for ensuring the integrity and accountability of the postal service. It conducts investigations to safeguard the postal system and performs audits and reviews.