Avoca is located in Benton county Arkansas with a geographic area of 1.9 square miles. The total population in Avoca is 1,936 with 40.7% male and 59.3% female. Children under age 5 represent 0.5% of the population, under age 18 equal 6.0% of the population and over age 65 is 78.7% of the population. The median household income is $51,248, per capita income is $25,524. There are a total of 750 housing units with 96.0% owner occupied. Education includes 11.1% of residents that are high school graduates and 75.1% with a bachelor's degree or higher. The average temperature in Avoca in the summer is 78 degrees, and in the winter 37 degrees.