Buhl is a city located on the old Oregon Trail in the western half of Twin Falls County, Idaho. The population was 4,122 at the time of the 2010 census, up from 3,985 in 2000. It is part of the Twin Falls, Idaho metropolitan area. U.S. Route 30 passes through Buhl, along the scenic Thousand Springs Scenic Byway from Twin Falls to Bliss. Known as the "Trout Capital of the World," Buhl is the location of numerous hatcheries in the immediate surrounding area, which produce a majority of the rainbow trout consumed in the United States. Clear Springs Foods, located just north of Buhl, processes over 20 million pounds of rainbow trout each year, making it the world's largest producer. History Buhl was founded on April 17, 1906. It is named for Frank H. Buhl of Sharon, Pennsylvania, a major investor in a Carey Act project known as the Twin Falls South Side Project, which introduced large-scale irrigation to the Magic Valley in the early 20th century. Geography Buhl is located at (42.600102, -114.761867), at an elevation of above sea level. According to the United States Census Bureau, the city has a total area of , all of it land. Climate According to the Köppen Climate Classification system, Buhl has a semi-arid climate, abbreviated "BSk" on climate maps. Demographics 2010 census At the 2010 census there were 4,122 people in 1,596 households, including 1,029 families, in the city. The population density was . There were 1,766 housing units at an average density of . The racial makup of the city was 81.9% White, 0.2% African American, 0.7% Native American, 0.2% Asian, 0.1% Pacific Islander, 13.8% from other races, and 3.1% from two or more races. Hispanic or Latino of any race were 24.9%. Of the 1,596 households 34.3% had children under the age of 18 living with them, 47.9% were married couples living together, 12.3% had a female householder with no husband present, 4.2% had a male householder with no wife present, and 35.5% were non-families. 30.3% of households were one person and 15.5% were one person aged 65 or older. The average household size was 2.55 and the average family size was 3.23. The median age was 35.4 years. 29.3% of residents were under the age of 18; 7.1% were between the ages of 18 and 24; 23.9% were from 25 to 44; 22.6% were from 45 to 64;