Marshall township is located in Highland county Ohio with a geographic area of square miles. The total population in Marshall township is 801 with 60.8% male and 39.2% female. Children under age 5 represent 9.4% of the population, under age 18 equal 28.6% of the population and over age 65 is 19.1% of the population. The median household income is $45,375, per capita income is $27,407. There are a total of 339 housing units with 80.5% owner occupied. Education includes 40.4% of residents that are high school graduates and 27.1% with a bachelor's degree or higher. The average temperature in Marshall township in the summer is 73 degrees, and in the winter 32 degrees.