Murphy is an unincorporated census-designated place in Owyhee County, Idaho, United States. The county seat of Owyhee County, it is one of the smallest county seats nationwide. As of the 2010 census, its population was 97.  Murphy is part of the Boise City–Nampa, Idaho Metropolitan Statistical Area.
Murphy formed around a railhead of the Boise, Nampa and Owyhee Railroad built in 1899. The town succeeded Silver City (in the Owyhee Mountains) as county seat in 1934, and the railroad operated until 1947. Murphy is the home of the Owyhee County Historical Museum and Library.
The community is named after Cornelius "Con" Murphy, a crew boss with the Boise, Nampa and Owyhee Railroad.
View looking northwest from Murphy airport towards Route 78
Murphy is located at 43°13′06″N 116°33′08″W / 43.21833°N 116.55222°W, at an elevation of 2,820 feet (860 m) above sea level; it is 25 miles (40 km) south of Nampa.
Murphy's airstrip is situated immediately northeast of the community, without a control tower. Its 2,500-foot (760 m) asphalt runway is oriented NW-SE (12/30), parallel with State Highway 78. The elevation drops 60 feet (18 m) in the northwest (30) direction, from 2,855 to 2,795 feet.
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