Grand ridge is located in La salle county Illinois with a geographic area of 0.5 square miles. The total population in Grand ridge is 650 with 48.6% male and 51.4% female. Children under age 5 represent 6.5% of the population, under age 18 equal 23.7% of the population and over age 65 is 17.7% of the population. The median household income is $58,056, per capita income is $26,429. There are a total of 252 housing units with 86.9% owner occupied. Education includes 28.2% of residents that are high school graduates and 17.9% with a bachelor's degree or higher. The average temperature in Grand ridge in the summer is 74 degrees, and in the winter 27 degrees.