Petersburg, IL
Population 2,590 · Illinois
About Petersburg, IL
Petersburg is a small community in Illinois with a population of 2,590 residents. The median household income is $59,850 per year, which is near the national average. The median age in Petersburg is 38.8 years.
Housing in Petersburg has a median home value of $174,800 and median monthly rent of $665. Of the 1,311 total housing units, the majority are owner-occupied, with 713 owner-occupied and 534 renter-occupied units.
The unemployment rate in Petersburg is 1.0% and the poverty rate is 15.5%. 29.6% of residents hold a bachelor's degree or higher. The average commute time is 22.6 minutes.
How Petersburg Ranks in Illinois
Cost of Living in Petersburg, IL
Compared to national averages, Petersburg has a median household income of $59,850 (20% below the national median of $75,149). Home values average $174,800, which is 29% below the national median. Monthly rent at $665 is 43% below the US average of $1,163. Within Illinois, Petersburg's income is 20% below the state average of $75,072, and home values are 5% above the state median of $165,779.
Why Live in Petersburg, IL?
Petersburg offers affordable housing with a median home value of $174,800, below the US average of $244,900, and rent that’s lower than the national average at $665/month, and a strong job market with an unemployment rate of just 1.0%. Additionally, the city features short commute times averaging just 22.6 minutes.
Potential considerations include median household income ($59,850) that falls below the national average. However, Petersburg’s smaller community size offers a quieter lifestyle and tight-knit neighborhoods.
Petersburg has a population of 2,590 with a median age of 38.8 years. Compare Petersburg with other cities to see how it stacks up, or explore all cities in Illinois.
Similar Cities Near Petersburg
Cities in Illinois with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Round Lake Heights | 2,585 | $75,556 | $196,100 | Compare |
| Rockdale | 2,598 | $56,799 | $183,500 | Compare |
| Sheridan | 2,610 | $73,214 | $183,200 | Compare |
| Marquette Heights | 2,613 | $77,386 | $121,600 | Compare |
| Galva | 2,543 | $55,446 | $77,800 | Compare |
| Kenilworth | 2,543 | $250,001 | $1,409,800 | Compare |
| Tilton | 2,537 | $53,246 | $71,700 | Compare |
| Brighton | 2,536 | $74,327 | $123,000 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in Illinois
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
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Frequently Asked Questions about Petersburg
What is the population of Petersburg, IL?
The population of Petersburg, IL is 2,590 according to the latest Census data.
What is the median household income in Petersburg?
The median household income in Petersburg, IL is $59,850 per year.
What is the median home value in Petersburg?
The median home value in Petersburg, IL is $174,800.
What is the average rent in Petersburg?
The median monthly rent in Petersburg, IL is $665.
What is the unemployment rate in Petersburg?
The unemployment rate in Petersburg, IL is 1.0%.