Lynnville is located in Giles county Tennessee with a geographic area of 0.3 square miles. The total population in Lynnville is 404 with 45.5% male and 54.5% female. Children under age 5 represent 14.1% of the population, under age 18 equal 21.5% of the population and over age 65 is 25.7% of the population. The median household income is $44,766, per capita income is $30,004. There are a total of 197 housing units with 83.2% owner occupied. Education includes 20.8% of residents that are high school graduates and 32.0% with a bachelor's degree or higher. The average temperature in Lynnville in the summer is 77 degrees, and in the winter 38 degrees.