Diamond is located in Grundy county Illinois with a geographic area of 1.9 square miles. The total population in Diamond is 2,786 with 51.5% male and 48.5% female. Children under age 5 represent 5.4% of the population, under age 18 equal 25.8% of the population and over age 65 is 12.5% of the population. The median household income is $51,019, per capita income is $30,891. There are a total of 1,206 housing units with 77.3% owner occupied. Education includes 44.4% of residents that are high school graduates and 14.0% with a bachelor's degree or higher. The average temperature in Diamond in the summer is 74 degrees, and in the winter 27 degrees.
