Boulder is located in Jefferson county Montana with a geographic area of 1.1 square miles. The total population in Boulder is 1,027 with 52.5% male and 47.5% female. Children under age 5 represent 8.6% of the population, under age 18 equal 24.0% of the population and over age 65 is 15.0% of the population. The median household income is $47,813, per capita income is $24,660. There are a total of 382 housing units with 63.9% owner occupied. Education includes 34.8% of residents that are high school graduates and 14.7% with a bachelor's degree or higher. The average temperature in Boulder in the summer is 62 degrees, and in the winter 27 degrees.
