Iowa colony is located in Brazoria county Texas with a geographic area of 9.4 square miles. The total population in Iowa colony is 5,305 with 49.4% male and 50.6% female. Children under age 5 represent 7.7% of the population, under age 18 equal 31.2% of the population and over age 65 is 6.4% of the population. The median household income is $95,144, per capita income is $43,059. There are a total of 1,750 housing units with 96.1% owner occupied. Education includes 15.0% of residents that are high school graduates and 38.7% with a bachelor's degree or higher. The average temperature in Iowa colony in the summer is 83 degrees, and in the winter 49 degrees.