St. anthony is located in Fremont county Idaho with a geographic area of 1.5 square miles. The total population in St. anthony is 3,552 with 53.4% male and 46.6% female. Children under age 5 represent 8.0% of the population, under age 18 equal 25.0% of the population and over age 65 is 11.7% of the population. The median household income is $42,551, per capita income is $17,596. There are a total of 1,156 housing units with 68.0% owner occupied. Education includes 36.1% of residents that are high school graduates and 15.0% with a bachelor's degree or higher. The average temperature in St. anthony in the summer is 65 degrees, and in the winter 24 degrees.