Blanchester is located in Clinton county Ohio with a geographic area of 4.1 square miles. The total population in Blanchester is 4,401 with 49.6% male and 50.4% female. Children under age 5 represent 9.2% of the population, under age 18 equal 26.7% of the population and over age 65 is 16.3% of the population. The median household income is $35,636, per capita income is $21,343. There are a total of 1,738 housing units with 54.7% owner occupied. Education includes 36.0% of residents that are high school graduates and 10.0% with a bachelor's degree or higher. The average temperature in Blanchester in the summer is 73 degrees, and in the winter 32 degrees.
