Bancroft is a city in the Gem Valley in Caribou County, Idaho, United States. The population was 377 at the 2010 census. Description The community was named after William H. Bancroft, a railroad official, and is a railroad town along Old Highway 30 (a former routing of U.S. Route 30). Geography Bancroft is located at (42.719440, -111.886194), at an elevation of . According to the United States Census Bureau, the city has a total area of , all of it land. Demographics 2010 census As of the census of 2010, there were 377 people, 138 households, and 104 families living in the city. The population density was . There were 163 housing units at an average density of . The racial makeup of the city was 96.0% White, 0.3% Native American, 0.8% from other races, and 2.9% from two or more races. Hispanic or Latino of any race were 3.2% of the population. There were 138 households, of which 31.9% had children under the age of 18 living with them, 68.1% were married couples living together, 5.1% had a female householder with no husband present, 2.2% had a male householder with no wife present, and 24.6% were non-families. 21.7% of all households were made up of individuals, and 13.8% had someone living alone who was 65 years of age or older. The average household size was 2.73 and the average family size was 3.24. The median age in the city was 36.9 years. 30.5% of residents were under the age of 18; 6.6% were between the ages of 18 and 24; 22% were from 25 to 44; 23.1% were from 45 to 64; and 17.8% were 65 years of age or older. The gender makeup of the city was 48.5% male and 51.5% female. 2000 census As of the census of 2000, there were 382 people, 144 households, and 103 families living in the city. The population density was . There were 172 housing units at an average density of . The racial makeup of the city was 98.69% White, 0.26% African American, 0.52% Native American, 0.52% from other races. Hispanic or Latino of any race were 0.79% of the population. There were 144 households, out of which 38.2% had children under the age of 18 living with them, 63.9% were married couples living together, 4.9% had a female householder with no husband present, and 27.8% were non-families. 27.1% of