Shell knob is located in Barry county Missouri with a geographic area of 9.5 square miles. The total population in Shell knob is 1,306 with 51.1% male and 48.9% female. Children under age 5 represent 0.0% of the population, under age 18 equal 7.7% of the population and over age 65 is 49.4% of the population. The median household income is $39,545, per capita income is $25,558. There are a total of 664 housing units with 89.3% owner occupied. Education includes 30.0% of residents that are high school graduates and 28.3% with a bachelor's degree or higher. The average temperature in Shell knob in the summer is 77 degrees, and in the winter 32 degrees.