Royalton is located in Franklin county Illinois with a geographic area of 1.1 square miles. The total population in Royalton is 1,107 with 50.3% male and 49.7% female. Children under age 5 represent 3.4% of the population, under age 18 equal 13.4% of the population and over age 65 is 23.5% of the population. The median household income is $33,750, per capita income is $29,733. There are a total of 540 housing units with 74.1% owner occupied. Education includes 37.2% of residents that are high school graduates and 19.4% with a bachelor's degree or higher. The average temperature in Royalton in the summer is 74 degrees, and in the winter 27 degrees.