Marengo is located in Iowa county Iowa with a geographic area of 2.1 square miles. The total population in Marengo is 2,407 with 45.4% male and 54.6% female. Children under age 5 represent 6.4% of the population, under age 18 equal 24.0% of the population and over age 65 is 22.6% of the population. The median household income is $55,859, per capita income is $27,205. There are a total of 1,024 housing units with 72.8% owner occupied. Education includes 41.0% of residents that are high school graduates and 14.3% with a bachelor's degree or higher. The average temperature in Marengo in the summer is 72 degrees, and in the winter 23 degrees.
