There are 2 Post Offices in West Islip, New York, serving a population of 27,117 people in an area of 7 square miles. There is 1 Post Office per 13,558 people, and 1 Post Office per 3 square miles.
In New York, West Islip is ranked 1,344th of 2100 cities in Post Offices per capita, and 1,238th of 2100 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for West Islip Post Offices.
US Post Office 480 Union Boulevard West Islip, NY
United States Postal Service 480 Union Boulevard West Islip, NY Mailing Service, Postal Services