Garrison is located in Mclean county North dakota with a geographic area of 1.4 square miles. The total population in Garrison is 1,708 with 48.8% male and 51.2% female. Children under age 5 represent 6.6% of the population, under age 18 equal 22.5% of the population and over age 65 is 28.8% of the population. The median household income is $54,318, per capita income is $30,854. There are a total of 768 housing units with 72.8% owner occupied. Education includes 44.3% of residents that are high school graduates and 16.7% with a bachelor's degree or higher. The average temperature in Garrison in the summer is 66 degrees, and in the winter 10 degrees.