Duncan falls is located in Muskingum county Ohio with a geographic area of 1.2 square miles. The total population in Duncan falls is 1,549 with 50.7% male and 49.3% female. Children under age 5 represent 6.3% of the population, under age 18 equal 18.1% of the population and over age 65 is 25.0% of the population. The median household income is $92,667, per capita income is $31,361. There are a total of 468 housing units with 77.8% owner occupied. Education includes 25.4% of residents that are high school graduates and 32.7% with a bachelor's degree or higher. The average temperature in Duncan falls in the summer is 73 degrees, and in the winter 32 degrees.