The Seat of New York's Nassau County is Mineola, a village located in the Town of Hempstead in Nassau County, New York. It is the county seat, which means it is the administrative center for the county. Mineola is also the location of the Nassau County Courthouse and other government buildings. The village has a population of about 18, 800 people and is located on Long Island, about 25 miles east of Manhattan.