Sheldon is located in Lyon county Iowa with a geographic area of 4.7 square miles. The total population in Sheldon is 5,178 with 52.7% male and 47.3% female. Children under age 5 represent 6.3% of the population, under age 18 equal 21.7% of the population and over age 65 is 15.0% of the population. The median household income is $54,931, per capita income is $30,430. There are a total of 2,196 housing units with 66.9% owner occupied. Education includes 36.8% of residents that are high school graduates and 21.5% with a bachelor's degree or higher. The average temperature in Sheldon in the summer is 70 degrees, and in the winter 23 degrees.
