Petersburg, Illinois Population 2021

2,184
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Petersburg is a city located in Menard County Illinois. It is also the county seat of Menard County. With a 2020 population of 2,184, it is the 463rd largest city in Illinois and the 7296th largest city in the United States . Petersburg is currently declining at a rate of -0.68% annually and its population has decreased by -3.36% since the most recent census, which recorded a population of 2,260 in 2010. Petersburg reached it's highest population of 2,332 in 2011. Spanning over 2 miles, Petersburg has a population density of 1,398 people per square mile.

The average household income in Petersburg is $66,023 with a poverty rate of 20.30%. The median rental costs in recent years comes to $681 per month, and the median house value is $98,000. The median age in Petersburg is 40.5 years, 40.3 years for males, and 40.7 years for females.

Petersburg Demographics

According to the most recent ACS, the racial composition of Petersburg was:

  • White: 93.71%
  • Two or more races: 4.97%
  • Black or African American: 0.72%
  • Asian: 0.36%
  • Other race: 0.24%
  • Native American: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Petersburg, Illinois is 2,184 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 2,229.The last official US Census in 2010 recorded the population at 2,260.

Petersburg, Illinois Population 2021

Population by Race

Race Population Percentage
White2,35593.71%
Two or More Races1254.97%
Black or African American180.72%
Asian90.36%
Some Other Race60.24%
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Petersburg Population by Race

Petersburg Population Pyramid $2021

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Petersburg Median Age

40.5


Total

40.3


Male

40.7


Female

Petersburg Adults

There are 1,954 adults, (393 of whom are seniors) in Petersburg.

Petersburg Age Dependency

61

Age Dependency Ratio

25.2

Old Age Dependency Ratio

35.8

Child Dependency Ratio

Petersburg Sex Ratio

Female

1,306

51.97%

Male

1,207

48.03%

Petersburg Population by Age

Petersburg Renter vs Owner Occupied by Household Type

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Petersburg Household Types

Type Owner Renter
Male84.6%15.4%
Married79.8%20.2%
All58.6%41.4%
Non Family47.6%52.4%
Female29.1%70.9%

58.6%

Rate of Home Ownership

Petersburg Households and Families

Type Count Average Size Owned
All1,1162.2358.6
Married4502.8779.8
Non Family4311.1747.6
Female1963.0229.1
Male392.5984.6

2.77

Average Family Size

2.23

Average Household Size

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Petersburg Households by Type

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Education Attained Count Percentage
Less Than 9th Grade211.23%
9th to 12th Grade1619.45%
High School Graduate58134.10%
Some College40423.71%
Associates Degree1478.63%
Bachelors Degree26315.43%
Graduate Degree1277.45%
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Petersburg Educational Attainment by Sex (over 25)

Petersburg Educational Attainment by Race

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Race Total High School Bachelors
White1,5751,432384
2+ Races7940
Hispanic2929
Black1212
Asian996

The highest rate of high school graduation is among black people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 66.67%.

Petersburg Educational Attainment by Race

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Name Average Male Female
Overall$35,000$40,463$32,976
Less Than 9th Grade$16,693$17,121$15,750
High School Graduate$39,766$43,750$32,750
Some College$31,274$32,181$27,386
Bachelors Degree$47,679$52,813$47,500
Graduate Degree$63,438$73,047$53,750

$35,000

Average Earnings

$40,463

Average Male

$32,976

Average Female

Petersburg Earnings by Educational Attainment

Petersburg Language by Age

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Petersburg Language

99.06% of Petersburg residents speak only English, while 0.94% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 0.26% of the population.

Petersburg Language

Petersburg Poverty by Race

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Name Total In Poverty Poverty Rate
White2,28448221.10%
Multiple125108.00%
Other66100.00%

20.30%

Overall Poverty Rate

18.02%

Male Poverty Rate

22.32%

Female Poverty Rate

Poverty in Petersburg

The race most likely to be in poverty in Petersburg is Other, with 100.00% below the poverty level.

The race least likely to be in poverty in Petersburg is Multiple, with 8.00% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.85%. Among those working part-time, it was 24.53%, and for those that did not work, the poverty rate was 28.25%.

Petersburg Poverty

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Name Poverty
Less Than 9th Grade34.07%
High School15.83%
Some College13.46%
Bachelors or Greater0.77%

Petersburg Poverty Rate by Education

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Rate Poverty
Female Unemployed84.21%
Male Unemployed38.24%
Female Employed12.50%
Male Employed6.74%

Petersburg Poverty Rate by Employment Status and Sex

Petersburg Income by Household Type

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Name Median Mean
Households$54,833$66,023
Families$65,944$70,408
Married Families$79,063-
Non Families$36,488$54,106
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Income by Household Type

Petersburg Marital Status

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Marriage Rates

46.6%

Overall Marriage Rate

51.9%

Male Marriage Rate

42.1%

Female Marriage Rate

Petersburg Married by Age and Sex

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Petersburg Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Petersburg Marital Status by Race

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Petersburg Marital Status

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225

Number of Veterans

215

Male Veterans

10

Female Veterans

War Veterans
Vietnam41
World War II25
First Gulf War22
Second Gulf War17
Korea12

Petersburg Veterans by War

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Age Group Veterans
75+83
55 to 6469
65 to 7432
35 to 5424
18 to 3417

Petersburg Veterans by Age

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Name Veterans % of Total
White21911.98%
2+ Races66.06%

Petersburg Veterans by Race

Petersburg Veterans by Education

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8.00%

Veteran Poverty Rate

45.78%

Veteran Disability Rate

Petersburg Veterans by Education

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69.7%

Labor Force Participation

64.4%

Employment Rate

7.6%

Unemployment Rate

Petersburg Employment by Age

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Petersburg Employment by Race

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Petersburg Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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87.54%

Born in Petersburg

99.24%

Native Born

0.76%

Foreign Born

0.00%

Non Citizen

0.76%

Naturalized

Place of Birth

99.24% of Petersburg residents were born in the United States, with 87.54% having been born in Illinois. 0.00% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Petersburg Place of Birth

Year Population Growth Annual Growth Rate
20212,184-15-0.68%
20202,199-15-0.68%
20192,214-15-0.67%
20182,22910.04%
20172,228-22-0.98%
20162,25030.13%
20152,247-30-1.32%
20142,277-17-0.74%
20132,294-27-1.16%
20122,321-11-0.47%
20112,33240.17%
20102,3280.00%

Petersburg Population by Year