Petersburg city, Illinois Demographics & Population 2026

Name: Petersburg city, Illinois Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

As of 2026, Petersburg city, Illinois has a total population of 2,590, the 455th largest city in Illinois, with a median household income of $59,850, which is 27% lower than the state average. The poverty rate is 15.5%.

Key Takeaways

Near full employment with an unemployment rate of just 1.0%.

Petersburg city Quick Facts

Population 2,590

Median Household Income $59,850

Median Home Value $174,800

Poverty Rate 15.5%

Unemployment Rate 1.0%

Median Age 38.8 years

Homeownership Rate 57.2%

Affordability Ratio 2.9x

Bachelor's Degree or Higher 29.6%

High School Graduation Rate 91.5%

Diversity Index 10/100

Population 2,590 455th of 1,445

Median Income $59,850 below average

Poverty Rate 15.5% 24% higher national

Median Home Value $174,800 above average

How Petersburg city Compares

Median Household Income

Petersburg city

$59,850

$81,702

National

$78,538

Median Home Value

Petersburg city

$174,800

$250,500

National

$303,400

Economy & Housing

Household Income Distribution

Under $25K 24.1%

$25K-$50K 22.1%

$50K-$100K 25.7%

$100K+ 28.1%

Employment

1.0% Unemployment Rate State: 5.8% | National: 5.2%

62.4% Labor Force Participation

Housing Overview

Owner 57.2%

Renter 42.8%

Affordability Index Very Affordable

2.9x home value to income ratio

People & Demographics

Age Distribution

Under 18

19.4%

18-34

27.3%

35-54

28.1%

55-74

17.8%

75+

7.3%

Race & Ethnicity

Diversity Index

Very Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 60 | National average: 60

Education

Educational Attainment (Adults 25+)

Petersburg city Rankings in Illinois

#455 Population of 1,445

#871 Median Income of 1,445

#329 Education of 1,445

#426 Home Value of 1,445

Explore Illinois Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Cities Similar to Petersburg city

These cities in the same state have comparable population and economic profiles.

City	Population	Median Income	Home Value	Bachelor's+	Poverty
Rockdale village	2,598	$56,799	$183,500	12.1%	26.9%
Rushville city	2,668	$57,589	$91,000	20.2%	16.3%
Galva city	2,543	$55,446	$77,800	23.7%	20.9%
Carrollton city	2,528	$64,464	$114,100	19.5%	10.2%
Henry city	2,478	$63,894	$115,900	20.8%	14.9%

Population Overview

Petersburg city is a small community located in Illinois. The total population is 2,590. It ranks as the 455th most populous out of 1,445 cities and towns in Illinois.

Age Demographics

The median age in Petersburg city is 38.8 years. This is about average than the state median of 38.9 years.

Economy, Income & Housing

The median household income in Petersburg city is $59,850. This is 27% lower than the state median of $81,702. Compared to the national median of $78,538, household income here is 24% lower. The poverty rate stands at 15.5%. This is 32% higher than the state poverty rate of 11.7%. The unemployment rate is 1.0%. This is 82% lower than the state rate of 5.8%. The median home value is $174,800. Housing costs are 30% lower than the state median of $250,500. With a home-value-to-income ratio of just 2.9x, Petersburg city is one of the most affordable housing markets in the area. 57.2% of occupied housing units are owner-occupied. This homeownership rate is 14% lower than the state average of 66.8%.

Race & Ethnicity

Petersburg city has a predominantly White (non-Hispanic) population, comprising 94.6% of all residents. Black or African American residents account for 0.3%. The White (non-Hispanic) population is significantly higher than the state average (94.6% vs 58.8%). The Black or African American population (0.3%) is well below the state average of 13.6%.

Education

29.6% of residents aged 25 and older hold a bachelor's degree or higher. This is 20% lower than the state rate of 37.2%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 91.5%.

Data Sources & Methodology

All demographic data for Petersburg city, Illinois is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Illinois state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,445 Census-designated places in Illinois. For official data, visit data.census.gov.

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Frequently Asked Questions

What is the population of Petersburg city, Illinois?

Petersburg city, Illinois has a population of 2,590 according to the most recent U.S. Census ACS 5-Year Estimates.

What is the median household income in Petersburg city, IL?

The median household income in Petersburg city is $59,850, which is 24% lower the national median of $78,538.

What is the poverty rate in Petersburg city, IL?

The poverty rate in Petersburg city is 15.5%. This means approximately 396 residents live below the federal poverty line.

What is the racial makeup of Petersburg city, Illinois?

Petersburg city's population is 94.6% White, 0.3% Black, 0.0% Hispanic/Latino, and 0.0% Asian.

What is the median home value in Petersburg city, IL?

The median home value in Petersburg city is $174,800. The home-value-to-income ratio is 2.9x.

How educated is Petersburg city, Illinois?

29.6% of adults (25+) in Petersburg city hold a bachelor's degree or higher, and 14.5% hold a graduate or professional degree.