Jerome is located in Jerome county Idaho with a geographic area of 5.7 square miles. The total population in Jerome is 11,824 with 50.1% male and 49.9% female. Children under age 5 represent 9.8% of the population, under age 18 equal 33.2% of the population and over age 65 is 10.8% of the population. The median household income is $47,389, per capita income is $21,211. There are a total of 3,949 housing units with 60.3% owner occupied. Education includes 26.5% of residents that are high school graduates and 13.9% with a bachelor's degree or higher. The average temperature in Jerome in the summer is 70 degrees, and in the winter 24 degrees.