Derby is located in Lucas county Iowa with a geographic area of 0.3 square miles. The total population in Derby is 113 with 40.7% male and 59.3% female. Children under age 5 represent 5.3% of the population, under age 18 equal 35.4% of the population and over age 65 is 15.9% of the population. The median household income is $41,750, per capita income is $13,727. There are a total of 41 housing units with 87.8% owner occupied. Education includes 31.7% of residents that are high school graduates and 0.0% with a bachelor's degree or higher. The average temperature in Derby in the summer is 72 degrees, and in the winter 23 degrees.
