Petersburg is located in Grant county West virginia with a geographic area of 1.6 square miles. The total population in Petersburg is 2,612 with 45.8% male and 54.2% female. Children under age 5 represent 5.8% of the population, under age 18 equal 14.4% of the population and over age 65 is 24.5% of the population. The median household income is $40,387, per capita income is $24,493. There are a total of 1,143 housing units with 60.1% owner occupied. Education includes 38.7% of residents that are high school graduates and 18.9% with a bachelor's degree or higher. The average temperature in Petersburg in the summer is 72 degrees, and in the winter 32 degrees.
