Henderson is located in Mills county Iowa with a geographic area of 0.1 square miles. The total population in Henderson is 213 with 44.1% male and 55.9% female. Children under age 5 represent 7.0% of the population, under age 18 equal 28.2% of the population and over age 65 is 27.2% of the population. The median household income is $61,042, per capita income is $21,021. There are a total of 67 housing units with 89.6% owner occupied. Education includes 25.4% of residents that are high school graduates and 11.9% with a bachelor's degree or higher. The average temperature in Henderson in the summer is 73 degrees, and in the winter 23 degrees.