Clay County, Illinois Population 2021

Clay County, Illinois's estimated population is 13,020 with a growth rate of -0.63% 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 13,826 and has seen a growth of -5.83% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Growth Rate
202113,020-82-0.63%
202013,102-82-0.62%
201913,184-82-0.62%
201813,266-4-0.03%
201713,270-44-0.33%
201613,314-87-0.65%
201513,401-44-0.33%
201413,445-109-0.80%
201313,554-160-1.17%
201213,714-11-0.08%
201113,725-101-0.73%
201013,826-634-4.38%
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%
188016,1923172.00%
187015,8756,53970.04%
18609,3365,047117.67%
18504,2891,06132.87%
18403,2282,473327.55%
18307550.00%
2021 Growth Rate
-0.63%
Founded
1824
County Seat
2010 Population
13,826
Growth Since 2010
-5.83%
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Clay County, Illinois Population Growth

Population by Race

Race Population Percentage
White12,78296.20%
Two or More Races3232.43%
Black or African American1070.81%
Asian420.32%
American Indian and Alaska Native320.24%
Some Other Race10.01%
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Clay County, Illinois Population by Race

Clay County, Illinois Population Pyramid $2021

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Clay County, Illinois Median Age

42.6


Total

42.2


Male

43.3


Female

Clay County, Illinois Adults

There are 10,270 adults, (2,661 of whom are seniors) in Clay County, Illinois.

Clay County, Illinois Age Dependency

74.6

Age Dependency Ratio

35

Old Age Dependency Ratio

39.7

Child Dependency Ratio

Clay County, Illinois Sex Ratio

Female

6,653

50.07%

Male

6,634

49.93%

Clay County, Illinois Population by Age

Clay County, Illinois Renter vs Owner Occupied by Household Type

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Clay County, Illinois Household Types

Type Owner Renter
Married87.7%12.3%
All74.5%25.5%
Male72.5%27.5%
Non Family63.4%36.6%
Female47.6%52.4%

74.5%

Rate of Home Ownership

Clay County, Illinois Households and Families

Type Count Average Size Owned
All5,6962.2774.5
Married2,8802.7987.7
Non Family1,8781.1563.4
Female6112.8947.6
Male327372.5

2.67

Average Family Size

2.27

Average Household Size

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Clay County, Illinois Households by Type

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Education Attained Count Percentage
Less Than 9th Grade2923.13%
9th to 12th Grade8318.90%
High School Graduate3,60538.61%
Some College2,11322.63%
Associates Degree1,09911.77%
Bachelors Degree94610.13%
Graduate Degree4524.84%
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Clay County, Illinois Educational Attainment by Sex (over 25)

Clay County, Illinois Educational Attainment by Race

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Race Total High School Bachelors
White9,0117,9601,348
2+ Races13712121
Black1076113
Asian423816
Native American2524
Hispanic1611
Other Race11

The highest rate of high school graduation is among other race people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 38.10%.

Clay County, Illinois Educational Attainment by Race

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Name Average Male Female
Overall$33,333$43,138$27,222
Less Than 9th Grade$22,138$27,644$12,339
High School Graduate$31,396$37,844$26,815
Some College$35,799$48,875$26,458
Bachelors Degree$43,534$44,719$40,288
Graduate Degree$76,518$85,714$51,741

$33,333

Average Earnings

$43,138

Average Male

$27,222

Average Female

Clay County, Illinois Earnings by Educational Attainment

Clay County, Illinois Language by Age

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Clay County, Illinois Language

98.20% of Clay County, Illinois residents speak only English, while 1.80% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.00% of the population.

Clay County, Illinois Language

Clay County, Illinois Poverty by Race

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Name Total In Poverty Poverty Rate
White12,5522,06316.44%
Black875765.52%
Multiple322134.04%
Hispanic14964.29%
Asian42716.67%
Native32412.50%
Other11100.00%

16.50%

Overall Poverty Rate

14.17%

Male Poverty Rate

18.85%

Female Poverty Rate

Poverty in Clay County, Illinois

The race most likely to be in poverty in Clay County, Illinois is Other, with 100.00% below the poverty level.

The race least likely to be in poverty in Clay County, Illinois is Multiple, with 4.04% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.55%. Among those working part-time, it was 28.11%, and for those that did not work, the poverty rate was 24.46%.

Clay County, Illinois Poverty

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Name Poverty
Less Than 9th Grade24.21%
High School15.62%
Some College11.04%
Bachelors or Greater5.44%

Clay County, Illinois Poverty Rate by Education

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Rate Poverty
Female Unemployed67.86%
Male Unemployed34.47%
Female Employed10.20%
Male Employed6.45%

Clay County, Illinois Poverty Rate by Employment Status and Sex

Clay County, Illinois Income by Household Type

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Name Median Mean
Households$48,500$62,922
Families$57,279$72,797
Married Families$67,740-
Non Families$25,722$34,806
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Income by Household Type

Clay County, Illinois Marital Status

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Marriage Rates

54.2%

Overall Marriage Rate

56.5%

Male Marriage Rate

51.9%

Female Marriage Rate

Clay County, Illinois Married by Age and Sex

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Clay County, Illinois 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 45-54.

Clay County, Illinois Marital Status by Race

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Clay County, Illinois Marital Status

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882

Number of Veterans

846

Male Veterans

36

Female Veterans

War Veterans
Vietnam363
First Gulf War148
Korea66
Second Gulf War52
World War II44

Clay County, Illinois Veterans by War

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Age Group Veterans
65 to 74270
55 to 64235
35 to 54194
75+176
18 to 347

Clay County, Illinois Veterans by Age

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Name Veterans % of Total
White8608.66%
Asian2252.38%

Clay County, Illinois Veterans by Race

Clay County, Illinois Veterans by Education

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7.97%

Veteran Poverty Rate

46.42%

Veteran Disability Rate

Clay County, Illinois Veterans by Education

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59.9%

Labor Force Participation

56.9%

Employment Rate

5%

Unemployment Rate

Clay County, Illinois Employment by Age

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Clay County, Illinois Employment by Race

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Clay County, Illinois 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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86.47%

Born in Clay County, Illinois

99.55%

Native Born

0.45%

Foreign Born

0.11%

Non Citizen

0.35%

Naturalized

Place of Birth

99.55% of Clay County, Illinois residents were born in the United States, with 86.47% having been born in Illinois. 0.11% 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

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990

Sources