Montana city is located in Jefferson county Montana with a geographic area of 34.1 square miles. The total population in Montana city is 2,821 with 51.4% male and 48.6% female. Children under age 5 represent 6.7% of the population, under age 18 equal 27.5% of the population and over age 65 is 12.8% of the population. The median household income is $105,134, per capita income is $39,722. There are a total of 939 housing units with 95.4% owner occupied. Education includes 24.2% of residents that are high school graduates and 48.3% with a bachelor's degree or higher. The average temperature in Montana city in the summer is 69 degrees, and in the winter 27 degrees.