The Library is chartered to serve residents of the Port Jefferson Union Free School District #6, and provides a public facility that extends services and borrowing privileges to library cardholders of all Suffolk County Libraries. The Library, along with the Comsewogue Public Library provides full library services to the residents of the Miller Place and Mount Sinai School District on a contract basis. In 2005 the Library building was officially placed on the National Register of Historic Places, a distinction designating it as worthy of preservation and restoration.