Petersburg is a very small city located in the state of Indiana. With a population of 2,269 people and two associated neighborhoods, Petersburg is the 220th largest community in Indiana. Much of the housing stock in Petersburg was built prior to World War II, making it one of the older and more historic cities in the country.

The city is relatively quiet, having a combination of lower population density and few of those groups of people who have a tendency to be noisy. For example, Petersburg has relatively fewer families with younger children, and/or college students. Combined, this makes Petersburg a pretty quiet place to live overall. If you like quiet, you will probably enjoy it here.

As is often the case in a small city, Petersburg doesn't have a public transportation system that people use for their commute.

In Petersburg, just 9.06% of people over 25 hold a college degree, which is very low compared to the rest of the nation, whereas the average among all cities is 21.84%.

The per capita income in Petersburg in 2022 was $31,019, which is middle income relative to Indiana, and lower middle income relative to the rest of the US. This equates to an annual income of $124,076 for a family of four. However, Petersburg contains both very wealthy and poor people as well.

The people who call Petersburg home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Petersburg residents report their race to be White, followed by Black or African-American. Important ancestries of people in Petersburg include English, German, Irish, Scottish, and Scots-Irish.

The most common language spoken in Petersburg is English. Other important languages spoken here include Polish and African languages.