Oliver township is located in Adams county Ohio with a geographic area of square miles. The total population in Oliver township is 1,526 with 58.0% male and 42.0% female. Children under age 5 represent 7.9% of the population, under age 18 equal 26.1% of the population and over age 65 is 12.1% of the population. The median household income is $66,579, per capita income is $22,879. There are a total of 452 housing units with 97.1% owner occupied. Education includes 41.2% of residents that are high school graduates and 7.1% with a bachelor's degree or higher. The average temperature in Oliver township in the summer is 73 degrees, and in the winter 32 degrees.