Petersburg is a city located in Virginia. With a 2020 population of 31,441, it is the 18th largest city in Virginia and the 1234th largest city in the United States. Petersburg is currently declining at a rate of -0.20% annually and its population has decreased by -3.02% since the most recent census, which recorded a population of 32,420 in 2010. Petersburg reached it's highest population of 41,055 in 1980. Spanning over 23 miles, Petersburg has a population density of 1,384 people per square mile.
The average household income in Petersburg is $50,193 with a poverty rate of 25.76%. The median rental costs in recent years comes to $912 per month, and the median house value is $108,200. The median age in Petersburg is 38.7 years, 36.2 years for males, and 41.3 years for females. For every 100 females there are 85.3 males.