Lake Petersburg, Illinois Population 2024

959

Lake Petersburg is a city located in Cass County and Menard County Illinois. Lake Petersburg has a 2024 population of 959. Lake Petersburg is currently growing at a rate of 11.38% annually and its population has increased by 75.32% since the most recent census, which recorded a population of 547 in 2020.

The average household income in Lake Petersburg is $126,154 with a poverty rate of 0%. The median age in Lake Petersburg is 59.5 years: 59.4 years for males, and 59.8 years for females.

Lake Petersburg Demographics

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

  • White: 93.58%
  • Two or more races: 4.19%
  • Asian: 2.23%
  • Black or African American: 0%
  • Native American: 0%
  • Native Hawaiian or Pacific Islander: 0%
  • Other race: 0%
Land Area (mi²)
1.8 sq mi
Density (mi²)
530.80/sq mi
Growth Since 2020
75.32% (412)
The current population of Lake Petersburg, Illinois is 959 based on our projections of the latest US Census estimates (released May 2024). The last official US Census in 2020 recorded the population at 547.

Population by Race

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Race
Population
Percentage (of total)
White71493.58%
Two or more races324.19%
Asian172.23%
Black or African American00%
Native American00%
Native Hawaiian or Pacific Islander00%
Other race00%

White

Two or more races

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

Other race

Lake Petersburg Population by Race

Lake Petersburg Population Pyramid 2024

Lake Petersburg Median Age

59.5

Total

59.4

Male

59.8

Female

Lake Petersburg Adults

There are 661 adults, (280 of whom are seniors) in Lake Petersburg.

Lake Petersburg Age Dependency

100.3

Age Dependency Ratio

73.5

Old Age Dependency Ratio

26.8

Child Dependency Ratio

Lake Petersburg Sex Ratio

Female37649.28%
Male38750.72%

Lake Petersburg Population by Age

Lake Petersburg Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All3692.0798.11.9
Married2482.511000
Non Family1121.0793.86.3
Female92.331000
Male0000

2.5

Average Family Size

2.07

Average Household Size

98.1%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Lake Petersburg Households and Families

Male

Female

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Education Attained
Count
Percentage
9th to 12th Grade00%
Associates Degree18328.33%
Bachelors Degree17026.32%
Graduate Degree8312.85%
High School Graduate12118.73%
Less Than 9th Grade91.39%
Some College8012.38%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Lake Petersburg Educational Attainment by Sex (over 25)

Lake Petersburg Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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Race
Total
High School
Bachelors
White629620244
Asian17179

The highest rate of high school graduation is among asian people with a rate of 100%.

The highest rate of bachelors degrees is among asian people with a rate of 52.94%.

Lake Petersburg Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Bachelors Degree$44,038$115,298$22,031
Graduate Degree$62,813$0$64,063
High School Graduate$23,750$0$18,000
Less Than 9th Grade$0$0$0
Overall$62,907$65,956$29,861
Some College$66,250$64,964$76,875

$62,907

Average Earnings

$65,956

Average Male

$29,861

Average Female

Lake Petersburg Earnings by Educational Attainment

Lake Petersburg Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Lake Petersburg Language

92.68% of Lake Petersburg residents speak only English, while 7.32% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 5.66% of the population.

Lake Petersburg Language

rate

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Rate
Poverty
Less Than 9th Grade0%
High School0%
Some College0%
Bachelors or Greater0%

Lake Petersburg Poverty Rate by Education

rate

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Rate
Poverty
Male Employed0%
Male Unemployed0%
Female Employed0%
Female Unemployed0%

Lake Petersburg Poverty Rate by Employment Status and Sex

Lake Petersburg Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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Name
Median
Mean
Families$135,089$148,063
Households$113,897$126,154
Married Families$135,357$-999,999,999
Non Families$80,500$75,881

mean

median

Income by Household Type

Lake Petersburg Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

75.5%

Overall Marriage Rate

79.8%

Male Marriage Rate

70.9%

Female Marriage Rate

Lake Petersburg Married by Age and Sex

male

female

Lake Petersburg Marriage

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 35-44.

Lake Petersburg Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Lake Petersburg Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

166

Number of Veterans

166

Male Veterans

0

Female Veterans

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War
Veterans
Vietnam101
Second Gulf War26
First Gulf War26
Korea0
World War II0

Lake Petersburg Veterans by War

count

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Age Group
Veterans
65 to 7478
75+38
55 to 6433
18 to 3417
35 to 540

Lake Petersburg Veterans by Age

count

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Name
Veterans
% of Total
White15824.84%
2+ Races8100%

Lake Petersburg Veterans by Race

Lake Petersburg Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

0%

Veteran Poverty Rate

9.64%

Veteran Disability Rate

Lake Petersburg Veterans by Education

LaborForceParticipation

52.9%

Labor Force Participation

51.7%

Employment Rate

2.3%

Unemployment Rate

Lake Petersburg Employment by Age

LaborForceParticipation

Lake Petersburg Employment by Race

LaborForceParticipation

Lake Petersburg Employment by Education

Origin of Non-Citizens

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.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

88.47%

Born in Lake Petersburg

96.2%

Native Born

3.8%

Foreign Born

2.62%

Non Citizen

1.18%

Naturalized

Place of Birth

96.2% of Lake Petersburg residents were born in the United States, with 88.47% having been born in Illinois. 2.62% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Lake Petersburg Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
20249599811.38%
20238619812.84%
20227639814.74%
202166511821.57%
20205479821.83%
2019449-104-18.81%
2018553-21-3.66%
2017574-75-11.56%
2016649213.34%
2015628-39-5.85%
2014667-5-0.74%
2013672-106-13.62%
2012778557.61%
201172340.56%
201071900%

Lake Petersburg Population by Year