Post Offices Near Me in Islip, NY

List of Islip Post Offices

Addresses, Phone Numbers, and Business Hours for Post Offices in Islip, NY.

Islip Post Office Islip NY 309 Main Street 11751 631-581-7931

About Post Offices

A USPS Post Office is a local branch of the United States Postal Service. In 1789, the USPS operated 75 Post Offices, and since then the USPS has opened thousands of Post Offices around the country. Today, USPS Post Offices sort, process, and deliver mail, provide USPS services to customers, and offer a range of other services, including passport services.