St. Anthony is located along the Henrys Fork of the Snake River and on US Highway 20 about 10 miles northeast of Rexburg. The city is situated about 70 miles from the west entrance to Yellowstone National Park. Demographics 2010 census As of the census of 2010, there were 3,542 people, 1,118 households, and 857 families residing in the city. The population density was . There were 1,252 housing units at an average density of . The racial makeup of the city was 85.9% White, 0.5% African American, 0.8% Native American, 0.5% Asian, 0.2% Pacific Islander, 10.6% from other races, and 1.6% from two or more races. Hispanic or Latino of any race were 20.9% of the population. There were 1,118 households, of which 45.3% had children under the age of 18 living with them, 58.8% were married couples living together, 12.1% had a female householder with no husband present, 5.8% had a male householder with no wife present, and 23.3% were non-families. 20.3% of all households were made up of individuals, and 7.7% had someone living alone who was 65 years of age or older. The average household size was 2.94 and the average family size was 3.39. The median age in the city was 29.8 years. 31.7% of residents were under the age of 18; 10.1% were between the ages of 18 and 24; 27.3% were from 25 to 44; 20.5% were from 45 to 64; and 10.4% were 65 years of age or older. The gender makeup of the city was 54.5% male and 45.5% female. 2000 census As of the census of 2000, there were 3,342 people, 1,091 households, and 819 families residing in the city. The population density was . There were 1,218 housing units at an average density of . The racial makeup of the city was 89.05% White, 0.21% African American, 0.69% Native American, 0.66% Asian, 0.06% Pacific Islander, 7.09% from other races, and 2.24% from two or more races. Hispanic or Latino of any race were 15.38% of the population. There were 1,091 households, out of which 40.1% had children under the age of 18 living with them, 59.9% were married couples living together, 11.5% had a female householder with no husband present, and 24.9% were non-families. 22.1% of all households were made up of individuals, and 10.1% had someone living alone who was 65 years of age or older. The average