Grottoes is located in Rockingham county Virginia with a geographic area of 2.0 square miles. The total population in Grottoes is 2,797 with 42.5% male and 57.5% female. Children under age 5 represent 7.3% of the population, under age 18 equal 20.7% of the population and over age 65 is 16.2% of the population. The median household income is $57,042, per capita income is $29,984. There are a total of 1,180 housing units with 79.6% owner occupied. Education includes 40.3% of residents that are high school graduates and 14.9% with a bachelor's degree or higher. The average temperature in Grottoes in the summer is 71 degrees, and in the winter 35 degrees.