Walnut grove is located in Leake county Mississippi with a geographic area of 1.6 square miles. The total population in Walnut grove is 1,027 with 50.9% male and 49.1% female. Children under age 5 represent 10.4% of the population, under age 18 equal 40.3% of the population and over age 65 is 7.9% of the population. The median household income is $29,375, per capita income is $13,212. There are a total of 286 housing units with 22.4% owner occupied. Education includes 35.3% of residents that are high school graduates and 17.5% with a bachelor's degree or higher. The average temperature in Walnut grove in the summer is 79 degrees, and in the winter 44 degrees.