Alden is located in Hardin county Iowa with a geographic area of 1.5 square miles. The total population in Alden is 810 with 50.2% male and 49.8% female. Children under age 5 represent 4.2% of the population, under age 18 equal 20.2% of the population and over age 65 is 18.3% of the population. The median household income is $55,761, per capita income is $27,318. There are a total of 366 housing units with 62.6% owner occupied. Education includes 43.4% of residents that are high school graduates and 14.5% with a bachelor's degree or higher. The average temperature in Alden in the summer is 72 degrees, and in the winter 23 degrees.