Sun river is located in Cascade county Montana with a geographic area of 1.9 square miles. The total population in Sun river is 41 with 70.7% male and 29.3% female. Children under age 5 represent 0.0% of the population, under age 18 equal 29.3% of the population and over age 65 is 12.2% of the population. The median household income is $48,250, per capita income is $22,922. There are a total of 21 housing units with 100.0% owner occupied. Education includes 19.0% of residents that are high school graduates and 47.6% with a bachelor's degree or higher. The average temperature in Sun river in the summer is 69 degrees, and in the winter 27 degrees.
