Martelle is located in Jones county Iowa with a geographic area of 0.3 square miles. The total population in Martelle is 309 with 48.5% male and 51.5% female. Children under age 5 represent 5.5% of the population, under age 18 equal 24.3% of the population and over age 65 is 10.4% of the population. The median household income is $75,000, per capita income is $30,790. There are a total of 128 housing units with 84.4% owner occupied. Education includes 21.9% of residents that are high school graduates and 15.6% with a bachelor's degree or higher. The average temperature in Martelle in the summer is 70 degrees, and in the winter 23 degrees.
