Petersburg is a city located in Indiana. With a 2020 population of 2,289, it is the 180th largest city in Indiana and the 7119th largest city in the United States. Petersburg is currently declining at a rate of -0.56% annually and its population has decreased by -3.94% since the most recent census, which recorded a population of 2,383 in 2010. Petersburg reached it's highest population of 2,382 in 2010. Spanning over 1 miles, Petersburg has a population density of 1,559 people per square mile.
The average household income in Petersburg is $54,433 with a poverty rate of 14.21%. The median rental costs in recent years comes to $532 per month, and the median house value is $76,400. The median age in Petersburg is 44.1 years, 41.8 years for males, and 46.7 years for females. For every 100 females there are 94.6 males.