Plains is located in Sanders county Montana with a geographic area of 0.6 square miles. The total population in Plains is 1,019 with 54.9% male and 45.1% female. Children under age 5 represent 3.4% of the population, under age 18 equal 15.7% of the population and over age 65 is 25.7% of the population. The median household income is $23,413, per capita income is $22,409. There are a total of 520 housing units with 43.3% owner occupied. Education includes 45.0% of residents that are high school graduates and 12.7% with a bachelor's degree or higher. The average temperature in Plains in the summer is 69 degrees, and in the winter 27 degrees.
