Port Washington, NY is currently using one area code which is area code 516. Area Code 516 was created from a split of area code 914 and put into service on January 1, 1956.
In addition to Port Washington, NY area code 516 serves Nassau County in Long Island including the larger cities and towns of Glen Cove, Hempstead, Long Beach, and Oyster Bay in addition to many smaller villages and hamlets within Nassau County.
Port Washington, NY is located in Nassau County and observes the Eastern Time Zone. View our Times by Area Code tool.