Clay County, Illinois Population 2024

12,921

Clay County, Illinois's estimated 2024 population is 12,921 with a growth rate of -0.6% in the past year according to the most recent United States census data. Clay County, Illinois is the 80th largest county in Illinois. The 2010 population was 13,822 and has seen a growth of -6.52% since that time.

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
202912,531-78-0.62%
202812,609-78-0.61%
202712,687-78-0.61%
202612,765-78-0.61%
202512,843-78-0.6%
202412,921-78-0.6%
202312,999-78-0.6%
202213,077-86-0.65%
202113,163-110-0.83%
202013,273960.73%
201913,177-83-0.63%
201813,26010.01%
201713,259-50-0.38%
201613,309-86-0.64%
201513,395-46-0.34%
201413,441-109-0.8%
201313,550-160-1.17%
201213,710-11-0.08%
201113,721-101-0.73%
201013,82200%
199014,460-823-5.39%
198015,2835483.72%
197014,735-1,080-6.83%
196015,815-1,630-9.34%
195017,445-1,502-7.93%
194018,9472,79217.28%
193016,155-1,529-8.65%
192017,684-977-5.24%
191018,661-892-4.56%
190019,5532,78116.58%
189016,7725803.58%
188016,1923172%
187015,8756,53970.04%
18609,3365,047117.67%
18504,2891,06132.87%
18403,2282,473327.55%
1830755-11,776-93.97%
2024 Growth Rate
-0.6% (-78)
County Seat
Louisville
2020 Population
13,273
Area
468 mi²
Density
28 people/mi²
Growth Since 2020
-2.65% (-352)
Founded
1824

Population by Race

Race
Population
Percentage (of total)
White12,56295.36%
Two or more races4223.2%
Black or African American930.71%
Asian400.3%
Other race290.22%
Native American270.2%
Native Hawaiian or Pacific Islander00%

White

Two or more races

Black or African American

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

Clay County, Illinois Population by Race

Clay County, Illinois Population Pyramid 2024

Clay County, Illinois Median Age

41.5

Total

40.5

Male

42

Female

Clay County, Illinois Adults

There are 10,139 adults, (2,738 of whom are seniors) in Clay County, Illinois.

Clay County, Illinois Age Dependency

78

Age Dependency Ratio

37

Old Age Dependency Ratio

41

Child Dependency Ratio

Clay County, Illinois Sex Ratio

Female6,57749.93%
Male6,59650.07%

Clay County, Illinois Population by Age

Clay County, Illinois Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All5,4312.3680.719.3
Married2,5893.0192.27.8
Non Family2,0881.2369.130.9
Female4183.1256.743.3
Male3363.593.86.3

2.94

Average Family Size

2.36

Average Household Size

80.7%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Clay County, Illinois Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade6977.56%
Associates Degree1,57317.06%
Bachelors Degree92410.02%
Graduate Degree5125.55%
High School Graduate3,37436.6%
Less Than 9th Grade4364.73%
Some College1,70218.46%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

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

Clay County, Illinois Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White8,7887,7331,388
2+ Races2131832
Black925124
Hispanic54461
Asian343410
Other Race272412
Native American27270

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 other race people with a rate of 44.44%.

Clay County, Illinois Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$41,071$41,538$37,432
Graduate Degree$84,344$91,221$59,861
High School Graduate$36,902$47,758$28,261
Less Than 9th Grade$26,719$33,859$13,750
Overall$42,406$53,333$36,350
Some College$41,952$57,604$36,677

$42,406

Average Earnings

$53,333

Average Male

$36,350

Average Female

Clay County, Illinois Earnings by Educational Attainment

Clay County, Illinois Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Clay County, Illinois Language

98.9% of Clay County, Illinois residents speak only English, while 1.1% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 0.9% of the population.

Clay County, Illinois Language

Clay County, Illinois Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White12,3362,08316.89%
Black524076.92%
Hispanic692637.68%
Multiple421112.61%
Other29310.34%
Asian3412.94%

16.71%

Overall Poverty Rate

16.3%

Male Poverty Rate

17.12%

Female Poverty Rate

Poverty in Clay County, Illinois

The race most likely to be in poverty in Clay County, Illinois is Black, with 76.92% below the poverty level.

The race least likely to be in poverty in Clay County, Illinois is Multiple, with 2.61% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 5.07%. Among those working part-time, it was 16.53%, and for those that did not work, the poverty rate was 26.01%.

Clay County, Illinois Poverty

rate

Rate
Poverty
Less Than 9th Grade29.48%
High School19.38%
Some College11.61%
Bachelors or Greater3.68%

Clay County, Illinois Poverty Rate by Education

rate

Rate
Poverty
Female Unemployed47.33%
Male Unemployed11.76%
Female Employed10.8%
Male Employed7.9%

Clay County, Illinois Poverty Rate by Employment Status and Sex

Clay County, Illinois Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$74,401$99,498
Households$57,266$79,425
Married Families$88,616$-999,999,999
Non Families$36,364$43,701

mean

median

Income by Household Type

Clay County, Illinois Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

49.5%

Overall Marriage Rate

50.4%

Male Marriage Rate

48.5%

Female Marriage Rate

Clay County, Illinois Married by Age and Sex

male

female

Clay 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 55-64.

Clay County, Illinois Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Clay County, Illinois Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

821

Number of Veterans

765

Male Veterans

56

Female Veterans

War
Veterans
Vietnam360
First Gulf War76
Korea71
World War II71
Second Gulf War64

Clay County, Illinois Veterans by War

count

Age Group
Veterans
65 to 74303
75+286
55 to 64114
35 to 54103
18 to 3415

Clay County, Illinois Veterans by Age

count

Name
Veterans
% of Total
White7988.22%
Asian1435%
2+ Races83.32%
Hispanic813.56%
Native American13.7%

Clay County, Illinois Veterans by Race

Clay County, Illinois Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.24%

Veteran Poverty Rate

37.16%

Veteran Disability Rate

Clay County, Illinois Veterans by Education

LaborForceParticipation

56.6%

Labor Force Participation

53.3%

Employment Rate

5.9%

Unemployment Rate

Clay County, Illinois Employment by Age

LaborForceParticipation

Clay County, Illinois Employment by Race

LaborForceParticipation

Clay 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

86.12%

Born in Clay County, Illinois

99.76%

Native Born

0.24%

Foreign Born

0.16%

Non Citizen

0.08%

Naturalized

Place of Birth

99.76% of Clay County, Illinois residents were born in the United States, with 86.12% having been born in Illinois. 0.16% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Clay County, Illinois Place of Birth

Sources