Suffolk County Post Office

Find Suffolk County New York 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.


Amagansett Post Office 501 Montauk Highway Amagansett NY 11930 631-267-2804


Amityville Post Office 77 Ireland Place Amityville NY 11701 631-264-3532

Aquebogue Post Office 212 Linda Avenue Riverhead NY 11901 631-722-4368

Babylon Post Office 110 Cooper Street Babylon NY 11702 631-669-4474

Bay Shore Post Office 1314 5th Avenue Bay Shore NY 11706 631-969-3504

Bayport Post Office 850 Montauk Highway Bayport NY 11705 631-472-7396

Bellport Post Office 26 Station Road Bellport NY 11713 631-286-8561

Blue Point Post Office 141 Montauk Highway Blue Point NY 11715 631-363-6272

Bohemia Post Office 200 Orville Drive Bohemia NY 11716 631-589-2487

Brentwood Post Office 25 2nd Street Brentwood NY 11717 631-273-0947

Bridgehampton Post Office 2322 Montauk Highway Bridgehampton NY 11932 631-537-9322

Brightwaters Post Office 145 Orinoco Drive Brightwaters NY 11718 631-206-4855

Brookhaven Post Office 2512 Montauk Highway Brookhaven NY 11719 631-286-1591

Calverton Post Office 3690 Middle Country Road Calverton NY 11933 631-727-0067

Center Moriches Post Office 35 Railroad Avenue Center Moriches NY 11934 631-878-0953

Centereach Post Office 245 Centereach Mall Centereach NY 11720 631-588-7069

Centerport Post Office 434 East Main Street Centerport NY 11721 631-261-6918

Central Islip Post Office 110 East Suffolk Avenue Central Islip NY 11722 631-234-0547

Cold Spring Harbor Post Office 126 Main Street Cold Spring Harbor NY 11724 631-692-5307

Commack Post Office 150 Veterans Memorial Highway Commack NY 11725 631-543-3647

About Post Offices

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.