Duncan is located in Greenlee county Arizona with a geographic area of 2.2 square miles. The total population in Duncan is 712 with 48.7% male and 51.3% female. Children under age 5 represent 9.4% of the population, under age 18 equal 23.6% of the population and over age 65 is 16.0% of the population. The median household income is $52,917, per capita income is $26,213. There are a total of 303 housing units with 64.7% owner occupied. Education includes 30.4% of residents that are high school graduates and 30.0% with a bachelor's degree or higher. The average temperature in Duncan in the summer is 83 degrees, and in the winter 49 degrees.
