Lincoln is located in Logan county Illinois with a geographic area of 6.2 square miles. The total population in Lincoln is 13,742 with 50.8% male and 49.2% female. Children under age 5 represent 5.5% of the population, under age 18 equal 18.2% of the population and over age 65 is 21.7% of the population. The median household income is $48,510, per capita income is $29,046. There are a total of 5,954 housing units with 60.9% owner occupied. Education includes 38.1% of residents that are high school graduates and 21.2% with a bachelor's degree or higher. The average temperature in Lincoln in the summer is 73 degrees, and in the winter 27 degrees.
