Ontario County is located in western New York state. The county is within the Finger Lakes Region of the state.Ontario County has a total area of approximately 662 square miles of which 97% is land and 3% water. As of the census of 2000, there were 100,224 people, 38,370 households, and 26,360 families residing in Ontario County, New York. It is ranked as 23rd most populous county in New York state. Progressive Farmer, a country-life oriented magazine, rated Ontario County as the 2006 "Best Place to Live" in the United States.