Clark County, Illinois Population 2024

15,016

Clark County, Illinois's estimated 2024 population is 15,016 with a growth rate of -0.48% in the past year according to the most recent United States census data. Clark County, Illinois is the 71st largest county in Illinois. The 2010 population was 16,291 and has seen a growth of -7.83% since that time.

Note: data after 2022 is projected based on recent change

38 Rows

Year
Population
Growth
Change
202914,656-72-0.49%
202814,728-72-0.49%
202714,800-72-0.48%
202614,872-72-0.48%
202514,944-72-0.48%
202415,016-72-0.48%
202315,088-72-0.47%
202215,160-192-1.25%
202115,352-77-0.5%
202015,429-36-0.23%
201915,465-129-0.83%
201815,594-230-1.45%
201715,824-36-0.23%
201615,860-21-0.13%
201515,881-179-1.11%
201416,060-45-0.28%
201316,105-160-0.98%
201216,265600.37%
201116,205-86-0.53%
201016,29100%
199015,921-992-5.87%
198016,9136974.3%
197016,216-330-1.99%
196016,546-816-4.7%
195017,362-1,480-7.85%
194018,8429705.43%
193017,872-3,293-15.56%
192021,165-2,352-10%
191023,517-516-2.15%
190024,0332,1349.74%
189021,89950.02%
188021,8943,17516.96%
187018,7193,73224.9%
186014,9875,45557.23%
18509,5322,07927.89%
18407,4533,51389.16%
18303,9403,009323.2%
1820931-13,725-93.65%
2024 Growth Rate
-0.48% (-72)
County Website
Clark County
County Seat
Marshall
2020 Population
15,429
Area
501 mi²
Density
30 people/mi²
Growth Since 2020
-2.68% (-413)
Founded
1819

Population by Race

Race
Population
Percentage (of total)
White14,87596.17%
Two or more races4212.72%
Black or African American1290.83%
Asian280.18%
Native American70.05%
Other race70.05%
Native Hawaiian or Pacific Islander00%

White

Two or more races

Black or African American

Asian

Native American

Other race

Native Hawaiian or Pacific Islander

Clark County, Illinois Population by Race

Clark County, Illinois Population Pyramid 2024

Clark County, Illinois Median Age

41.4

Total

39.2

Male

42.6

Female

Clark County, Illinois Adults

There are 11,914 adults, (3,009 of whom are seniors) in Clark County, Illinois.

Clark County, Illinois Age Dependency

73.7

Age Dependency Ratio

33.8

Old Age Dependency Ratio

39.9

Child Dependency Ratio

Clark County, Illinois Sex Ratio

Female7,75250.12%
Male7,71549.88%

Clark County, Illinois Population by Age

Clark County, Illinois Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All6,4472.3680.719.3
Married3,4032.8791.28.8
Non Family1,9371.147030
Female7012.6354.645.4
Male4063.4388.711.3

2.79

Average Family Size

2.36

Average Household Size

80.7%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Clark County, Illinois Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade5935.52%
Associates Degree1,58914.78%
Bachelors Degree1,79016.65%
Graduate Degree8357.77%
High School Graduate3,79735.32%
Less Than 9th Grade2432.26%
Some College1,90217.69%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Clark County, Illinois Educational Attainment by Sex (over 25)

Clark County, Illinois Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White10,4169,6172,546
2+ Races24022072
Hispanic12312363
Black51410
Asian28217
Native American770
Other Race770

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

The highest rate of bachelors degrees is among hispanic people with a rate of 51.22%.

Clark County, Illinois Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$58,173$76,786$38,250
Graduate Degree$64,179$77,273$50,785
High School Graduate$37,247$42,628$24,922
Less Than 9th Grade$21,250$26,100$0
Overall$44,257$56,553$32,906
Some College$45,204$59,318$29,420

$44,257

Average Earnings

$56,553

Average Male

$32,906

Average Female

Clark County, Illinois Earnings by Educational Attainment

Clark County, Illinois Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Clark County, Illinois Language

98.33% of Clark County, Illinois residents speak only English, while 1.67% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 0.93% of the population.

Clark County, Illinois Language

Clark County, Illinois Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White14,6131,3179.01%
Black974344.33%
Multiple409112.69%

9.04%

Overall Poverty Rate

8.01%

Male Poverty Rate

10.08%

Female Poverty Rate

Poverty in Clark County, Illinois

The race most likely to be in poverty in Clark County, Illinois is Black, with 44.33% below the poverty level.

The race least likely to be in poverty in Clark County, Illinois is Multiple, with 2.69% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.67%. Among those working part-time, it was 14.17%, and for those that did not work, the poverty rate was 14.21%.

Clark County, Illinois Poverty

rate

Rate
Poverty
Less Than 9th Grade19.17%
High School12.23%
Some College5.85%
Bachelors or Greater1.41%

Clark County, Illinois Poverty Rate by Education

rate

Rate
Poverty
Female Unemployed19.15%
Male Unemployed12.62%
Female Employed7.17%
Male Employed5.2%

Clark County, Illinois Poverty Rate by Employment Status and Sex

Clark County, Illinois Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$81,424$92,192
Households$65,874$79,807
Married Families$98,801$-999,999,999
Non Families$37,216$44,384

mean

median

Income by Household Type

Clark County, Illinois Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

56.0%

Overall Marriage Rate

57.4%

Male Marriage Rate

54.7%

Female Marriage Rate

Clark County, Illinois Married by Age and Sex

male

female

Clark County, Illinois 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.

Clark County, Illinois Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Clark County, Illinois Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

887

Number of Veterans

855

Male Veterans

32

Female Veterans

War
Veterans
Vietnam355
Second Gulf War245
First Gulf War173
Korea96
World War II5

Clark County, Illinois Veterans by War

count

Age Group
Veterans
35 to 54287
75+269
65 to 74242
18 to 3450
55 to 6439

Clark County, Illinois Veterans by Age

count

Name
Veterans
% of Total
White8830.07647670188809977
Native American30.42857142857142855
2+ Races10.00398406374501992

Clark County, Illinois Veterans by Race

Clark County, Illinois Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

8.81%

Veteran Poverty Rate

34.65%

Veteran Disability Rate

Clark County, Illinois Veterans by Education

LaborForceParticipation

61.2%

Labor Force Participation

58.6%

Employment Rate

4%

Unemployment Rate

Clark County, Illinois Employment by Age

LaborForceParticipation

Clark County, Illinois Employment by Race

LaborForceParticipation

Clark County, Illinois 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

45.42%

Born in Clark County, Illinois

99.45%

Native Born

0.55%

Foreign Born

0.27%

Non Citizen

0.28%

Naturalized

Place of Birth

99.45% of Clark County, Illinois residents were born in the United States, with 45.42% having been born in Illinois. 0.27% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Clark County, Illinois Place of Birth

Sources