Roseville is located in Warren county Illinois with a geographic area of 0.7 square miles. The total population in Roseville is 852 with 47.9% male and 52.1% female. Children under age 5 represent 3.9% of the population, under age 18 equal 21.1% of the population and over age 65 is 33.1% of the population. The median household income is $42,368, per capita income is $31,342. There are a total of 368 housing units with 78.3% owner occupied. Education includes 38.6% of residents that are high school graduates and 21.2% with a bachelor's degree or higher. The average temperature in Roseville in the summer is 74 degrees, and in the winter 27 degrees.