Allison is located in Butler county Iowa with a geographic area of 2.9 square miles. The total population in Allison is 1,134 with 52.6% male and 47.4% female. Children under age 5 represent 4.9% of the population, under age 18 equal 20.8% of the population and over age 65 is 22.3% of the population. The median household income is $53,382, per capita income is $27,510. There are a total of 500 housing units with 74.6% owner occupied. Education includes 38.0% of residents that are high school graduates and 13.2% with a bachelor's degree or higher. The average temperature in Allison in the summer is 72 degrees, and in the winter 23 degrees.
