 Bonneville Peak, on the eastern border in the Portneuf Range, is the county's highest point at 9,271 feet (2825 m) ASL; on its western slopes is the Pebble Creek ski area.As of the 2000 United States Census, there were 75,565 people, 27,192 households, and 19,224 families in the county.The population density was 68 people per square mile (26/km²).