Illiopolis, Illinois Population 2024

845

Illiopolis is a city located in Sangamon County Illinois. Illiopolis has a 2024 population of 845. Illiopolis is currently growing at a rate of 0.36% annually and its population has increased by 0.12% since the most recent census, which recorded a population of 844 in 2020.

The average household income in Illiopolis is $75,205 with a poverty rate of 8.52%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Illiopolis is 40.3 years, 39.4 years for males, and 41 years for females.

Illiopolis Demographics

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

  • White: 95.26%
  • Two or more races: 3.89%
  • Black or African American: 0.49%
  • Asian: 0.36%
  • Native American:
  • Native Hawaiian or Pacific Islander:
  • Other race:
Land Area (mi²)
0.4 sq mi
Density (mi²)
1,936.60/sq mi
Growth Since 2020
0.12% (1)
The current population of Illiopolis, Illinois is 845 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 844.

Illiopolis, Illinois Population 2024

Population by Race

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Race
Population
Percentage (of total)
White78395.26%
Two or more races323.89%
Black or African American40.49%
Asian30.36%
Native American
Native Hawaiian or Pacific Islander
Other race
showing: 7 rows

White

Two or more races

Black or African American

Asian

Native American

Native Hawaiian or Pacific Islander

Other race

Illiopolis Population by Race

Illiopolis Population Pyramid 2024

Illiopolis Median Age

40.3

Total

39.4

Male

41

Female

Illiopolis Adults

There are 605 adults, (136 of whom are seniors) in Illiopolis.

Illiopolis Age Dependency

75.3

Age Dependency Ratio

29

Old Age Dependency Ratio

46.3

Child Dependency Ratio

Illiopolis Sex Ratio

Female38947.32%
Male43352.68%

Illiopolis Population by Age

Illiopolis Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All3312.4875.824.2
Married1753.2580.619.4
Non Family1111.0561.338.7
Male262.7792.37.7
Female193.3794.75.3
showing: 5 rows

3.16

Average Family Size

2.48

Average Household Size

75.8%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Illiopolis Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Illiopolis Educational Attainment by Sex (over 25)

Illiopolis Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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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%.

Illiopolis Educational Attainment by Race

All

Male

Female

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$45,938

Average Earnings

$52,500

Average Male

$39,938

Average Female

Illiopolis Earnings by Educational Attainment

Illiopolis Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Illiopolis Language

97.89% of Illiopolis residents speak only English, while 2.11% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 1.45% of the population.

Illiopolis Language

Illiopolis Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White783708.94%
showing: 1 rows

8.52%

Overall Poverty Rate

10.16%

Male Poverty Rate

6.68%

Female Poverty Rate

Poverty in Illiopolis

The race most likely to be in poverty in Illiopolis is White, with 8.94% below the poverty level.

The race least likely to be in poverty in Illiopolis is White, with 8.94% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was . Among those working part-time, it was 13.93%, and for those that did not work, the poverty rate was 15.42%.

Illiopolis Poverty

rate

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Rate
Poverty
Less Than 9th Grade22.73%
High School8.07%
Some College4%
Bachelors or Greater
showing: 4 rows

Illiopolis Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed37.5%
Male Employed4.98%
Female Employed2.12%
Male Unemployed
showing: 4 rows

Illiopolis Poverty Rate by Employment Status and Sex

Illiopolis Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Illiopolis Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

59.9%

Overall Marriage Rate

61.3%

Male Marriage Rate

58.5%

Female Marriage Rate

Illiopolis Married by Age and Sex

male

female

Illiopolis Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 45-54.

Illiopolis Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Illiopolis Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

65

Number of Veterans

61

Male Veterans

4

Female Veterans

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Illiopolis Veterans by War

count

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Illiopolis Veterans by Age

count

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Illiopolis Veterans by Race

Illiopolis Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

3.08%

Veteran Poverty Rate

24.62%

Veteran Disability Rate

Illiopolis Veterans by Education

LaborForceParticipation

63.9%

Labor Force Participation

62.3%

Employment Rate

2.5%

Unemployment Rate

Illiopolis Employment by Age

LaborForceParticipation

Illiopolis Employment by Race

LaborForceParticipation

Illiopolis 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

91.73%

Born in Illiopolis

99.27%

Native Born

0.73%

Foreign Born

0.49%

Non Citizen

0.24%

Naturalized

Place of Birth

99.27% of Illiopolis residents were born in the United States, with 91.73% having been born in Illinois. 0.49% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Illiopolis Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202986030.35%
202885730.35%
202785430.35%
202685130.35%
202584830.36%
202484530.36%
202384230.36%
202283930.36%
2021836-8-0.95%
2020844
2019844-9-1.06%
2018853-10-1.16%
2017863-8-0.92%
2016871-8-0.91%
2015879-7-0.79%
2014886-5-0.56%
2013891-5-0.56%
201289610.11%
201189530.34%
2010892
showing: 20 rows

Illiopolis Population by Year