Rock valley is located in Sioux county Iowa with a geographic area of 4.5 square miles. The total population in Rock valley is 3,858 with 50.5% male and 49.5% female. Children under age 5 represent 3.2% of the population, under age 18 equal 31.6% of the population and over age 65 is 16.1% of the population. The median household income is $62,121, per capita income is $29,288. There are a total of 1,466 housing units with 80.2% owner occupied. Education includes 30.1% of residents that are high school graduates and 18.6% with a bachelor's degree or higher. The average temperature in Rock valley in the summer is 72 degrees, and in the winter 23 degrees.
