Elk river is located in Clearwater county Idaho with a geographic area of 0.1 square miles. The total population in Elk river is 124 with 49.2% male and 50.8% female. Children under age 5 represent 1.6% of the population, under age 18 equal 6.5% of the population and over age 65 is 41.1% of the population. The median household income is $38,889, per capita income is $27,267. There are a total of 64 housing units with 93.8% owner occupied. Education includes 46.9% of residents that are high school graduates and 17.2% with a bachelor's degree or higher. The average temperature in Elk river in the summer is 61 degrees, and in the winter 24 degrees.