Petersburg is located in Illinois. Petersburg, Illinois has a population of 2,515. Petersburg is less family-centric than the surrounding county with 30.19% of the households containing married families with children. The county average for households married with children is 30.48%.
The median household income in Petersburg, Illinois is $60,536. The median household income for the surrounding county is $79,743 compared to the national median of $69,021. The median age of people living in Petersburg is 39.9 years.
The average high temperature in July is 85.1 degrees, with an average low temperature in January of 18.3 degrees. The average rainfall is approximately 37.8 inches per year, with 17 inches of snow per year.
