Grand junction is located in Hardeman county Tennessee with a geographic area of 1.2 square miles. The total population in Grand junction is 388 with 37.9% male and 62.1% female. Children under age 5 represent 8.0% of the population, under age 18 equal 24.2% of the population and over age 65 is 17.8% of the population. The median household income is $47,455, per capita income is $25,574. There are a total of 163 housing units with 60.7% owner occupied. Education includes 27.0% of residents that are high school graduates and 12.9% with a bachelor's degree or higher. The average temperature in Grand junction in the summer is 78 degrees, and in the winter 38 degrees.