Pearl city is located in Stephenson county Illinois with a geographic area of 0.6 square miles. The total population in Pearl city is 831 with 50.8% male and 49.2% female. Children under age 5 represent 11.3% of the population, under age 18 equal 37.5% of the population and over age 65 is 10.1% of the population. The median household income is $66,458, per capita income is $27,448. There are a total of 291 housing units with 79.0% owner occupied. Education includes 24.4% of residents that are high school graduates and 20.6% with a bachelor's degree or higher. The average temperature in Pearl city in the summer is 74 degrees, and in the winter 27 degrees.