West Islip Post Office

Find West Islip 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.


West Islip Post Office 480 Union Boulevard West Islip NY 11795 631-669-5157


Babylon Post Office 110 Cooper Street Babylon NY 11702 1.4 miles from West Islip 631-669-4474

Brightwaters Post Office 145 Orinoco Drive Brightwaters NY 11718 1.8 miles from West Islip 631-206-4855

North Babylon Post Office 1196 Deer Park Avenue North Babylon NY 11703 2.3 miles from West Islip 631-667-4693

Bay Shore Post Office 1314 5th Avenue Bay Shore NY 11706 2.4 miles from West Islip 631-969-3504

Penataquit Post Office 10 Bay Shore Avenue Bay Shore NY 11706 2.7 miles from West Islip 631-969-3506

Santapogue Post Office 617 West Montauk Highway West Babylon NY 11704 3.0 miles from West Islip 631-422-2276

West Babylon Post Office 385 Route 109 West Babylon NY 11704 3.5 miles from West Islip 631-893-0560

Deer Park Post Office 375 Carlls Path Deer Park NY 11729 3.7 miles from West Islip 631-667-6490

Lindenhurst Post Office 65 East Hoffman Avenue Lindenhurst NY 11757 4.2 miles from West Islip 631-226-6914

Islip Post Office 309 Main Street Islip NY 11751 4.3 miles from West Islip 631-581-7931

Wyandanch Post Office 1569 Straight Path Wyandanch NY 11798 4.5 miles from West Islip 631-643-3914

Brentwood Post Office 25 2nd Street Brentwood NY 11717 4.6 miles from West Islip 631-273-0947

Wheatley Heights Post Office 6 Colonial Springs Road Wheatley Heights NY 11798 5.2 miles from West Islip 631-643-3913

Copiague Post Office 695 Marconi Boulevard Copiague NY 11726 5.8 miles from West Islip 631-842-9084

Islip Terrace Post Office 136 Carleton Avenue Islip Terrace NY 11752 5.9 miles from West Islip 631-581-7894

East Islip Post Office 11 Greenwood Avenue East Islip NY 11730 6.0 miles from West Islip 631-581-7807

Federal Court House Post Office 101 Federal Plaza Central Islip NY 11722 6.5 miles from West Islip 631-715-0001

Amityville Post Office 77 Ireland Place Amityville NY 11701 6.9 miles from West Islip 631-264-3532

South Farmingdale Post Office 918 Main Street Farmingdale NY 11735 7.2 miles from West Islip 516-249-1573

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.