Smithfield is located in Isle of wight county Virginia with a geographic area of 9.7 square miles. The total population in Smithfield is 8,492 with 50.2% male and 49.8% female. Children under age 5 represent 6.4% of the population, under age 18 equal 19.1% of the population and over age 65 is 20.0% of the population. The median household income is $83,977, per capita income is $43,680. There are a total of 3,448 housing units with 72.7% owner occupied. Education includes 25.7% of residents that are high school graduates and 29.1% with a bachelor's degree or higher. The average temperature in Smithfield in the summer is 71 degrees, and in the winter 35 degrees.