Rupert is the county seat and largest city of Minidoka County, Idaho,. It is part of the Burley Micropolitan Statistical Area. The population was 6,082 at the 2020 census, up from 5,554 in 2010. Rupert, founded in 1906, sprang up after the announcement of the Minidoka Reclamation Project, which provided irrigation and electricity following the completion of the Minidoka Dam on the Snake River in 1906. After the dam was built, Rupert became one of the first cities in the world to have its streets lit by electricity. Geography Rupert is located in southern Minidoka County at an elevation of above sea level. It is part of the agricultural region of the Snake River Plain known as Magic Valley, and is northwest of the Snake River. Interstate 84 passes to the south, and before its construction, U.S. Route 30 passed through Rupert. Acequia lies about northeast of Rupert and Paul is about the same distance to the west. According to the United States Census Bureau, Rupert has a total area of , all of it land. Climate These data are from the Western Regional Climate Center, compiled over the years 1906 to 2002. Demographics 2010 census As of the census of 2010, there were 5,554 people, 2,026 households, and 1,397 families living in the city. The population density was . There were 2,186 housing units at an average density of . The racial makeup of the city was 75.0% White, 0.3% African American, 1.6% Native American, 0.4% Asian, 20.1% from other races, and 2.6% from two or more races. Hispanic or Latino of any race were 42.9% of the population. There were 2,026 households, of which 38.8% had children under the age of 18 living with them, 49.0% were married couples living together, 14.1% had a female householder with no husband present, 5.8% had a male householder with no wife present, and 31.0% were non-families. 26.8% of all households were made up of individuals, and 14.2% had someone living alone who was 65 years of age or older. The average household size was 2.71 and the average family size was 3.30. The median age in the city was 33.3 years. 30.4% of residents were under the age of 18; 9.6% were between the ages of 18 and 24; 23.2% were from 25 to 44; 21.8% were from 45 to 64; and 15% were 65 years of age or older. The