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. Petersburg has an unusually large stock of pre-World War II architecture, making it one of the older and more historic cities.

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.

Being a small city, Petersburg does not have a public transit system used by locals to get to and from work.

The population of Petersburg has a very low overall level of education: only 9.06% of people over 25 hold a 4-year college degree or higher.

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.