Rio grande is located in Gallia county Ohio with a geographic area of 1.4 square miles. The total population in Rio grande is 1,063 with 45.6% male and 54.4% female. Children under age 5 represent 9.5% of the population, under age 18 equal 28.6% of the population and over age 65 is 5.0% of the population. The median household income is $45,250, per capita income is $13,397. There are a total of 184 housing units with 35.9% owner occupied. Education includes 27.2% of residents that are high school graduates and 12.5% with a bachelor's degree or higher. The average temperature in Rio grande in the summer is 73 degrees, and in the winter 32 degrees.
