Thompson falls is located in Sanders county Montana with a geographic area of 1.6 square miles. The total population in Thompson falls is 1,489 with 52.5% male and 47.5% female. Children under age 5 represent 9.8% of the population, under age 18 equal 35.3% of the population and over age 65 is 13.3% of the population. The median household income is $39,545, per capita income is $18,431. There are a total of 526 housing units with 64.1% owner occupied. Education includes 47.7% of residents that are high school graduates and 19.2% with a bachelor's degree or higher. The average temperature in Thompson falls in the summer is 67 degrees, and in the winter 27 degrees.