Irwin is located in Bonneville county Idaho with a geographic area of 2.5 square miles. The total population in Irwin is 220 with 45.9% male and 54.1% female. Children under age 5 represent 5.5% of the population, under age 18 equal 16.4% of the population and over age 65 is 35.9% of the population. The median household income is $56,094, per capita income is $30,602. There are a total of 107 housing units with 87.9% owner occupied. Education includes 33.6% of residents that are high school graduates and 27.1% with a bachelor's degree or higher. The average temperature in Irwin in the summer is 63 degrees, and in the winter 24 degrees.
