Mcallister is located in Madison county Montana with a geographic area of 2.3 square miles. The total population in Mcallister is 209 with 51.7% male and 48.3% female. Children under age 5 represent 0.0% of the population, under age 18 equal 0.0% of the population and over age 65 is 71.8% of the population. The median household income is $38,734, per capita income is $23,917. There are a total of 113 housing units with 92.9% owner occupied. Education includes 84.1% of residents that are high school graduates and 0.0% with a bachelor's degree or higher. The average temperature in Mcallister in the summer is 69 degrees, and in the winter 27 degrees.