Oneida County is located in northwestern New York. Oneida County has a total area of approximately 1257 square miles of which 96% is land and 4% water. As of the census of 2000, there were 235,469 people, 90,496 households, and 59,184 families residing in the Oneida County, making it the twelfth most populous county in New York state. Oneida Lake is on the northwestern corner of the county, and the Adirondack State Park is on the northeast. The name of Oneida County is derived from a Native American tribe that lived in the region.