Sun Valley is a resort city in the western United States. It is within Blaine County in central Idaho. The resort is adjacent to the city of Ketchum and within the greater Wood River valley. The population was 1,406 at the 2010 census, down from 1,427 in 2000. The elevation of Sun Valley (at the Lodge) is  above sea level. The area is served by Friedman Memorial Airport in Hailey, approximately south. Visitors to Sun Valley are relatively close to the Sawtooth National Recreation Area, accessed over Galena Summit on Highway 75, the Sawtooth Scenic Byway.