Clinton County, Illinois Population 2021

Clinton County, Illinois's estimated population is 37,292 with a growth rate of -0.36% in the past year according to the most recent United States census data. Clinton County, Illinois is the 38th largest county in Illinois. The 2010 Population was 37,843 and has seen a growth of -1.46% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Growth Rate
202137,292-135-0.36%
202037,427-135-0.36%
201937,562-135-0.36%
201837,697520.14%
201737,645460.12%
201637,599-66-0.18%
201537,665190.05%
201437,646-85-0.23%
201337,731-187-0.49%
201237,918-113-0.30%
201138,0311880.50%
201037,8433,89911.49%
199033,9441,3274.07%
198032,6174,30215.19%
197028,3154,28617.84%
196024,0291,4356.35%
195022,594-318-1.39%
194022,9121,5437.22%
193021,369-1,578-6.88%
192022,9471150.50%
191022,8323,00815.17%
190019,8242,41313.86%
189017,411-1,303-6.96%
188018,7142,42914.92%
187016,2855,34448.84%
186010,9415,802112.90%
18505,1391,42138.22%
18403,7181,38859.57%
18302,3300.00%
2021 Growth Rate
-0.36%
County Website
Founded
1824
County Seat
2010 Population
37,843
Growth Since 2010
-1.46%
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Clinton County, Illinois Population Growth

Population by Race

Race Population Percentage
White35,24793.66%
Black or African American1,2983.45%
Two or More Races5861.56%
Asian2140.57%
Some Other Race1930.51%
American Indian and Alaska Native960.26%
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Clinton County, Illinois Population by Race

Clinton County, Illinois Population Pyramid $2021

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Clinton County, Illinois Median Age

40.6


Total

39.1


Male

43


Female

Clinton County, Illinois Adults

There are 29,662 adults, (6,261 of whom are seniors) in Clinton County, Illinois.

Clinton County, Illinois Age Dependency

60.8

Age Dependency Ratio

26.8

Old Age Dependency Ratio

34.1

Child Dependency Ratio

Clinton County, Illinois Sex Ratio

Female

18,030

47.91%

Male

19,604

52.09%

Clinton County, Illinois Population by Age

Clinton County, Illinois Renter vs Owner Occupied by Household Type

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Clinton County, Illinois Household Types

Type Owner Renter
Married90.5%9.5%
All79.6%20.4%
Non Family69.8%30.2%
Male68.1%31.9%
Female53.1%46.9%

79.6%

Rate of Home Ownership

Clinton County, Illinois Households and Families

Type Count Average Size Owned
All14,3532.4779.6
Married7,8003.0690.5
Non Family4,7701.2269.8
Female1,1403.2353.1
Male6433.1268.1

3.02

Average Family Size

2.47

Average Household Size

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Clinton County, Illinois Households by Type

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Education Attained Count Percentage
Less Than 9th Grade1,0804.04%
9th to 12th Grade1,5695.87%
High School Graduate8,51631.87%
Some College5,92022.16%
Associates Degree3,67713.76%
Bachelors Degree4,06315.21%
Graduate Degree1,8957.09%
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Clinton County, Illinois Educational Attainment by Sex (over 25)

Clinton County, Illinois Educational Attainment by Race

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Race Total High School Bachelors
White24,59422,7155,699
Black1,07262177
Hispanic68443578
2+ Races19117242
Asian15112151
Other Race989421
Native American967315

The highest rate of high school graduation is among other race people with a rate of 95.92%.

The highest rate of bachelors degrees is among asian people with a rate of 33.77%.

Clinton County, Illinois Educational Attainment by Race

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Name Average Male Female
Overall$40,542$48,140$33,533
Less Than 9th Grade$24,449$30,377$17,083
High School Graduate$31,971$39,640$25,126
Some College$37,832$49,262$29,058
Bachelors Degree$57,195$62,406$52,188
Graduate Degree$72,363$72,415$72,250

$40,542

Average Earnings

$48,140

Average Male

$33,533

Average Female

Clinton County, Illinois Earnings by Educational Attainment

Clinton County, Illinois Language by Age

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Clinton County, Illinois Language

95.90% of Clinton County, Illinois residents speak only English, while 4.10% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 2.81% of the population.

Clinton County, Illinois Language

Clinton County, Illinois Poverty by Race

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Name Total In Poverty Poverty Rate
White33,4272,2926.86%
Hispanic1,00125125.07%
Multiple58118231.33%
Other1933618.65%
Black326226.75%

7.70%

Overall Poverty Rate

7.59%

Male Poverty Rate

7.81%

Female Poverty Rate

Poverty in Clinton County, Illinois

The race most likely to be in poverty in Clinton County, Illinois is Multiple, with 31.33% below the poverty level.

The race least likely to be in poverty in Clinton County, Illinois is Black, with 6.75% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.64%. Among those working part-time, it was 9.13%, and for those that did not work, the poverty rate was 15.28%.

Clinton County, Illinois Poverty

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Name Poverty
Less Than 9th Grade16.23%
High School9.38%
Some College6.43%
Bachelors or Greater2.92%

Clinton County, Illinois Poverty Rate by Education

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Rate Poverty
Female Unemployed23.58%
Male Unemployed18.88%
Female Employed3.69%
Male Employed2.80%

Clinton County, Illinois Poverty Rate by Employment Status and Sex

Clinton County, Illinois Income by Household Type

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Name Median Mean
Households$66,639$81,411
Families$80,642$94,489
Married Families$88,186-
Non Families$38,827$52,608
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Income by Household Type

Clinton County, Illinois Marital Status

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Marriage Rates

52.9%

Overall Marriage Rate

51.0%

Male Marriage Rate

54.8%

Female Marriage Rate

Clinton County, Illinois Married by Age and Sex

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Clinton 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 35-44.

Clinton County, Illinois Marital Status by Race

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Clinton County, Illinois Marital Status

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2,872

Number of Veterans

2,615

Male Veterans

257

Female Veterans

War Veterans
Vietnam1,041
First Gulf War723
Second Gulf War546
Korea306
World War II79

Clinton County, Illinois Veterans by War

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Age Group Veterans
65 to 74731
75+722
55 to 64640
35 to 54583
18 to 34196

Clinton County, Illinois Veterans by Age

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Name Veterans % of Total
White2,79410.09%
Black383.20%
Hispanic354.55%
2+ Races175.20%
Native American1515.63%
Asian52.66%
Other Race32.73%

Clinton County, Illinois Veterans by Race

Clinton County, Illinois Veterans by Education

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4.89%

Veteran Poverty Rate

33.58%

Veteran Disability Rate

Clinton County, Illinois Veterans by Education

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62.7%

Labor Force Participation

60.9%

Employment Rate

2.6%

Unemployment Rate

Clinton County, Illinois Employment by Age

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Clinton County, Illinois Employment by Race

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Clinton 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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79.38%

Born in Clinton County, Illinois

98.25%

Native Born

1.75%

Foreign Born

1.02%

Non Citizen

0.73%

Naturalized

Place of Birth

98.25% of Clinton County, Illinois residents were born in the United States, with 79.38% having been born in Illinois. 1.02% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Clinton 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