Illiopolis, Illinois Population 2021

826
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Illiopolis is a city located in Sangamon County Illinois. With a 2020 population of 826, it is the 710th largest city in Illinois and the 11136th largest city in the United States . Illiopolis is currently declining at a rate of -0.96% annually and its population has decreased by -7.30% since the most recent census, which recorded a population of 891 in 2010. Illiopolis reached it's highest population of in . Spanning over 0 miles, Illiopolis has a population density of 1,893 people per square mile.

The average household income in Illiopolis is $69,809 with a poverty rate of 13.50%. The median rental costs in recent years comes to $625 per month, and the median house value is $88,400. The median age in Illiopolis is 40.6 years, 40.2 years for males, and 43.1 years for females.

Illiopolis Demographics

According to the most recent ACS, the racial composition of Illiopoliswas:

  • White: 95.86%
  • Two or more races: 3.89%
  • Black or African American: 0.24%
  • Native American: 0.00%
  • Asian: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
  • Other race: 0.00%
The current population of Illiopolis, Illinois is 826 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 842.The last official US Census in 2010 recorded the population at 891.

Illiopolis, Illinois Population 2021

Population by Race

Race Population Percentage
White78895.86%
Two or More Races323.89%
Black or African American20.24%
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Illiopolis Population by Race

Illiopolis Population Pyramid $2021

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Illiopolis Median Age

40.6


Total

40.2


Male

43.1


Female

Illiopolis Adults

There are 604 adults, (143 of whom are seniors) in Illiopolis.

Illiopolis Age Dependency

78.3

Age Dependency Ratio

31

Old Age Dependency Ratio

47.3

Child Dependency Ratio

Illiopolis Sex Ratio

Female

402

48.91%

Male

420

51.09%

Illiopolis Population by Age

Illiopolis Renter vs Owner Occupied by Household Type

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Illiopolis Household Types

Type Owner Renter
Male40%60%
Non Family60.7%39.3%
All73.4%26.6%
Female79.2%20.8%
Married82.9%17.1%

73.4%

Rate of Home Ownership

Illiopolis Households and Families

Type Count Average Size Owned
All3162.673.4
Married1703.5582.9
Non Family1121.0960.7
Female242.9679.2
Male102.540

3.39

Average Family Size

2.6

Average Household Size

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Illiopolis Households by Type

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Education Attained Count Percentage
Less Than 9th Grade20.37%
9th to 12th Grade152.75%
High School Graduate26147.89%
Some College15828.99%
Associates Degree427.71%
Bachelors Degree5810.64%
Graduate Degree91.65%
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Illiopolis Educational Attainment by Sex (over 25)

Illiopolis Educational Attainment by Race

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Race Total High School Bachelors
White53752067
2+ Races66
Black22

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 white people with a rate of 12.48%.

Illiopolis Educational Attainment by Race

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Name Average Male Female
Overall$41,875$52,250$35,156
Less Than 9th Grade$$$
High School Graduate$35,192$56,667$28,750
Some College$41,964$50,179$38,750
Bachelors Degree$55,938$57,188$45,000
Graduate Degree$$$

$41,875

Average Earnings

$52,250

Average Male

$35,156

Average Female

Illiopolis Earnings by Educational Attainment

Illiopolis Language by Age

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Illiopolis Language

97.67% of Illiopolis residents speak only English, while 2.33% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 1.94% of the population.

Illiopolis Language

Illiopolis Poverty by Race

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13.50%

Overall Poverty Rate

15.00%

Male Poverty Rate

11.94%

Female Poverty Rate

Poverty in Illiopolis

The race most likely to be in poverty in Illiopolis is White, with 14.18% below the poverty level.

The race least likely to be in poverty in Illiopolis is White, with 14.18% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.52%. Among those working part-time, it was 12.40%, and for those that did not work, the poverty rate was 22.65%.

Illiopolis Poverty

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Name Poverty
Less Than 9th Grade17.65%
High School14.18%
Some College6.00%
Bachelors or Greater4.48%

Illiopolis Poverty Rate by Education

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Rate Poverty
Female Unemployed28.00%
Female Employed6.41%
Male Employed5.15%
Male Unemployed0.00%

Illiopolis Poverty Rate by Employment Status and Sex

Illiopolis Income by Household Type

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Name Median Mean
Households$64,063$69,809
Families$76,154$85,471
Married Families$90,000-
Non Families$28,750$39,476
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Income by Household Type

Illiopolis Marital Status

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Marriage Rates

56.1%

Overall Marriage Rate

56.8%

Male Marriage Rate

55.4%

Female Marriage Rate

Illiopolis Married by Age and Sex

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Illiopolis 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 55-64.

Illiopolis Marital Status by Race

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Illiopolis Marital Status

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65

Number of Veterans

64

Male Veterans

1

Female Veterans

War Veterans
Vietnam35
First Gulf War20
Second Gulf War6
Korea2
World War II

Illiopolis Veterans by War

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Age Group Veterans
65 to 7424
35 to 5421
55 to 6410
75+6
18 to 344

Illiopolis Veterans by Age

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Illiopolis Veterans by Race

Illiopolis Veterans by Education

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7.69%

Veteran Poverty Rate

32.31%

Veteran Disability Rate

Illiopolis Veterans by Education

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60.4%

Labor Force Participation

55.8%

Employment Rate

7.7%

Unemployment Rate

Illiopolis Employment by Age

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Illiopolis Employment by Race

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Illiopolis 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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90.15%

Born in Illiopolis

100.00%

Native Born

0.00%

Foreign Born

0.00%

Non Citizen

0.00%

Naturalized

Place of Birth

100.00% of Illiopolis residents were born in the United States, with 90.15% 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.

Illiopolis Place of Birth

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
2021826-8-0.96%
2020834-8-0.95%
2019842-8-0.94%
2018850-11-1.28%
2017861-9-1.03%
2016870-9-1.02%
2015879-7-0.79%
2014886-5-0.56%
2013891-3-0.34%
2012894-1-0.11%
201189530.34%
20108920.00%

Illiopolis Population by Year