11951 Post Office

Find 11951 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.


Mastic Beach Post Office 110 Mastic Road Mastic Beach NY 11951 631-281-0359


Mastic Post Office 1450 Montauk Highway Mastic NY 11950 3.0 miles from 11951 631-281-0275

Moriches Post Office 290 Montauk Highway Moriches NY 11955 3.1 miles from 11951 631-878-1381

Shirley Post Office 800 Montauk Highway Shirley NY 11967 3.2 miles from 11951 631-281-0479

Center Moriches Post Office 35 Railroad Avenue Center Moriches NY 11934 3.4 miles from 11951 631-878-0953

Upton Post Office 2 Center Court Center Moriches NY 11934 4.2 miles from 11951 631-344-2539

East Moriches Post Office 3 Atlantic Avenue East Moriches NY 11940 4.6 miles from 11951 631-878-0243

Brookhaven Post Office 2512 Montauk Highway Brookhaven NY 11719 4.8 miles from 11951 631-286-1591

Bellport Post Office 26 Station Road Bellport NY 11713 5.7 miles from 11951 631-286-8561

Eastport Post Office 24 Eastport-Manor Road Eastport NY 11941 6.7 miles from 11951 631-325-1798

Yaphank Post Office 5 East Main Street Yaphank NY 11980 6.8 miles from 11951 631-345-6829

Remsenburg Post Office 137 South Country Road Remsenburg-Speonk NY 11960 7.1 miles from 11951 631-325-5937

Speonk Post Office 323 Montauk Highway Remsenburg-Speonk NY 11972 7.5 miles from 11951 631-325-1741

Manorville Post Office 525 Eastport Manor Road Manorville NY 11949 7.7 miles from 11951 631-727-0064

Patchogue Post Office 170 East Main Street Patchogue NY 11772 9.5 miles from 11951 631-475-8623

Medford Post Office 1905 Route 112 Medford NY 11763 9.5 miles from 11951 631-475-8273

Ridge Post Office 1700 Middle Country Road Ridge NY 11961 9.6 miles from 11951 631-345-6842

Westhampton Post Office 408 Mill Road Westhampton NY 11977 9.9 miles from 11951 631-288-4081

Middle Island Post Office 780 Middle Country Road Middle Island NY 11953 10.2 miles from 11951 631-205-1089

Westhampton Beach Post Office 170 Main Street Westhampton Beach NY 11978 10.4 miles from 11951 631-288-4093

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.