Sherman is located in Sangamon county Illinois with a geographic area of 3.1 square miles. The total population in Sherman is 4,470 with 46.1% male and 53.9% female. Children under age 5 represent 5.0% of the population, under age 18 equal 20.7% of the population and over age 65 is 21.2% of the population. The median household income is $123,232, per capita income is $51,586. There are a total of 1,671 housing units with 85.0% owner occupied. Education includes 11.3% of residents that are high school graduates and 55.2% with a bachelor's degree or higher. The average temperature in Sherman in the summer is 74 degrees, and in the winter 27 degrees.
