
Petersburg
- County:
- Pike County
- County Seat:
- Yes
- Area (mi²):
- 1.468
- State:
- Indiana
Petersburg is a city located in Pike County, Indiana. Petersburg has a 2025 population of 2,233. It is also the county seat of Pike County. Petersburg is currently declining at a rate of -0.58% annually and its population has decreased by -2.91% since the most recent census, which recorded a population of 2,300 in 2020.
The average household income in Petersburg is $64,869 with a poverty rate of 15.12%. The median age in Petersburg is 43.2 years: 37.7 years for males, and 51.3 years for females.