Petersburg is a city located in Cass County and Menard County Illinois. Petersburg has a 2024 population of 2,194. It is also the county seat of Menard County. Petersburg is currently declining at a rate of -0.77% annually and its population has decreased by -3.01% since the most recent census, which recorded a population of 2,262 in 2020.
The average household income in Petersburg is $91,119 with a poverty rate of 17.23%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Petersburg is 38.8 years, 36.8 years for males, and 40.7 years for females.
According to the most recent ACS, the racial composition of Petersburg was:
White
Two or more races
Black or African American
Asian
Native American
Native Hawaiian or Pacific Islander
Other race
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 1,079 | 2.23 | 58.5 | 41.5 |
| Married | 447 | 2.85 | 83 | 17 |
| Non Family | 384 | 1.06 | 46.1 | 53.9 |
| Female | 230 | 2.93 | 28.3 | 71.7 |
| Male | 18 | 2.56 | 100 | 0 |
2.78
Average Family Size
2.23
Average Household Size
58.5%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
The highest rate of high school graduation is among black people with a rate of 100%.
The highest rate of bachelors degrees is among asian people with a rate of 66.67%.
All
Male
Female
$45,833
Average Earnings
$49,643
Average Male
$40,781
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
99.39% of Petersburg residents speak only English, while 0.61% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 0.35% of the population.
rate
17.23%
Overall Poverty Rate
21.95%
Male Poverty Rate
12.48%
Female Poverty Rate
The race most likely to be in poverty in Petersburg is Multiple, with 31.82% below the poverty level.
The race least likely to be in poverty in Petersburg is White, with 16.76% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 3.31%. Among those working part-time, it was 28.07%, and for those that did not work, the poverty rate was 20.19%.
Married
Widowed
Divorced
Separated
NeverMarried
47.0%
Overall Marriage Rate
49.0%
Male Marriage Rate
45.1%
Female Marriage Rate
male
female
The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 20-34.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
27.89%
Veteran Poverty Rate
49.47%
Veteran Disability Rate
LaborForceParticipation
65%
Labor Force Participation
62.8%
Employment Rate
3.4%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
Europe
Asia
Africa
Oceania
Latin America
North America
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Europe
Asia
Africa
Oceania
Latin America
North America
81.7%
Born in Petersburg
99.38%
Native Born
0.62%
Foreign Born
0%
Non Citizen
0.62%
Naturalized
99.38% of Petersburg residents were born in the United States, with 81.7% having been born in Illinois. 0% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.
Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2029 | 2,109 | -17 | -0.8% |
| 2028 | 2,126 | -17 | -0.79% |
| 2027 | 2,143 | -17 | -0.79% |
| 2026 | 2,160 | -17 | -0.78% |
| 2025 | 2,177 | -17 | -0.77% |
| 2024 | 2,194 | -17 | -0.77% |
| 2023 | 2,211 | -17 | -0.76% |
| 2022 | 2,228 | -13 | -0.58% |
| 2021 | 2,241 | -21 | -0.93% |
| 2020 | 2,262 | 33 | 1.48% |
| 2019 | 2,229 | -16 | -0.71% |
| 2018 | 2,245 | 1 | 0.04% |
| 2017 | 2,244 | -25 | -1.1% |
| 2016 | 2,269 | 9 | 0.4% |
| 2015 | 2,260 | -31 | -1.35% |
| 2014 | 2,291 | -17 | -0.74% |
| 2013 | 2,308 | -25 | -1.07% |
| 2012 | 2,333 | -11 | -0.47% |
| 2011 | 2,344 | 2 | 0.09% |
| 2010 | 2,342 | 0 | 0% |