Nassau County Post Office

Find Nassau 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.

Albertson Post Office 860 Willis Avenue Albertson NY 11507 516-746-3512

Alden Manor Post Office 778 Elmont Road Elmont NY 11003 516-285-4078

Atlantic Beach Post Office 2009 Park Street Atlantic Beach NY 11509 516-239-1178

Baldwin Post Office 2260 Grand Avenue Baldwin NY 11510 516-223-5024

Bank Plaza Post Office 2000 Fisher Avenue Merrick NY 11566 516-378-3295

Bayville Post Office 251 Bayville Avenue Bayville NY 11709 516-628-9235

Bellmore Post Office 2611 Merrick Road Bellmore NY 11710 516-781-0579

Bethpage Post Office 339 Hicksville Road Bethpage NY 11714 516-938-3901

Carle Place Post Office 309 Westbury Avenue Carle Place NY 11514 516-333-3147

Cedarhurst Post Office 124 Grove Avenue Cedarhurst NY 11516 516-295-1452

East Meadow Post Office 446 East Meadow Avenue East Meadow NY 11554 516-794-4509

East Norwich Post Office 1001 Oyster Bay Road East Norwich NY 11732 516-922-8283

East Rockaway Post Office 10 Main Street East Rockaway NY 11518 516-599-2157

Elmont Post Office 260 Elmont Road Elmont NY 11003 516-354-5947

Farmingdale Post Office 380 Main Street Farmingdale NY 11735 516-249-1552

Floral Park Post Office 35 Tulip Avenue Floral Park NY 11001 516-616-5184

Franklin Square Post Office 867 Hempstead Turnpike Franklin Square NY 11010 516-437-6647

Freeport Post Office 132 West Merrick Road Freeport NY 11520 516-378-6512

Garden City Post Office 600 Franklin Avenue Garden City NY 11530 516-747-2201

Glen Cove Post Office 2 Glen Cove Avenue Glen Cove NY 11542 516-671-7847

What is a Post Office?

A post office is a local branch of the United States Postal Service, where mail is received and dispatched to individuals and businesses in a given community. A post office usually has postal clerks who receive and process mail, and it's also the place from which mail carriers pick up mail they deliver on their local routes. The office handles USPS business, including mail and package sorting, delivery and forwarding, sales of stamps and other postal supplies, change-of-address requests, and other administrative functions.

In some small communities, the local post office may be located within a commercial business. In communities both large and small, a post office may serve as a local passport office at which passport applications are received and undergo initial processing.