Mount carroll is located in Carroll county Illinois with a geographic area of 2.0 square miles. The total population in Mount carroll is 1,503 with 43.7% male and 56.3% female. Children under age 5 represent 3.0% of the population, under age 18 equal 19.6% of the population and over age 65 is 21.6% of the population. The median household income is $54,821, per capita income is $27,966. There are a total of 667 housing units with 77.2% owner occupied. Education includes 31.8% of residents that are high school graduates and 30.7% with a bachelor's degree or higher. The average temperature in Mount carroll in the summer is 70 degrees, and in the winter 27 degrees.