Sidney is located in Champaign county Illinois with a geographic area of 0.6 square miles. The total population in Sidney is 1,297 with 49.0% male and 51.0% female. Children under age 5 represent 6.4% of the population, under age 18 equal 26.4% of the population and over age 65 is 12.6% of the population. The median household income is $76,250, per capita income is $34,866. There are a total of 503 housing units with 82.9% owner occupied. Education includes 21.5% of residents that are high school graduates and 30.8% with a bachelor's degree or higher. The average temperature in Sidney in the summer is 74 degrees, and in the winter 27 degrees.