Clark County, Illinois Population and Demographics

In this article, we'll explore the population statistics for Clark County, Illinois, including popular demographics data like median age, number of households, household income, gender, employment and unemployment rates, occupations, religion, and more.

We are using the latest American Community Survey (ACS) 5-Year survey data from the US Census Bureau, which is accurate up to 2021.

Table of Contents

Population

There is a lot of data that lets us see how many people live in Clark County, Illinois. The most basic data is the total population, which is the total number of people living in Clark County, Illinois. The estimated population of Clark County, Illinois is 15,587 people, with a median age of 41.8.

We can look at the total population in Clark County over the last 5 years to see how much it has changed.

Year Population Change 5-Year Change
2021
15,587
 -0.1% -2.12%
2020
15,602
 -0.73% -
2019
15,716
 -0.76% -
2018
15,836
 -0.55% -
2017
15,924
 - -

Population of Clark County, Illinois by Race and Ethnicity

We can also look at how the population has changed over the last 5 years by each of the race/ethnicity types as defined by the US Census Bureau.

Race 2021 2017 Change
White
96.5%
96.7%
 -0.21%
Black/African American
0.8%
0.3%
 +166.67%
Native
0%
0.1%
 -100.00%
Hispanic
1.6%
1.5%
 +6.67%
Asian
0.1%
0.4%
 -75.00%
Hawaiian/Pacific Islander
0%
0%
 0.00%
Two Or More Races
1%
1%
 0.00%
Other
0%
0%
 0.00%

This data can be very important for a number of reasons, including social and economic research, planning and development, and marketing to a multi-cultural population.

Note that the Native group includes both Native American and Alaskan Native people.

Population of Clark County, Illinois by Age and Gender

The age and gender of a population is another interesting demographic statistic because it lets us track trends in the population over time. For example, we can see how the population has changed over the last 5 years by median age as a total, and also by male and female.

Year Total Male Female
2021 41.8 -0.24% 39.6 +0.51% 42.9 -2.28%
2020 41.9 -0.95% 39.4 -2.72% 43.9 +0.92%
2019 42.3 -1.63% 40.5 -3.8% 43.5 -0.23%
2018 43 0% 42.1 +2.43% 43.6 -0.46%
2017 43 - 41.1 - 43.8 -

The median age of Clark County, Illinois gives you an idea of the age distribution, with half of the population being older than the median age and half being younger.

This can then be used to infer and compare against birth rates, parent ages, and more metrics to understand the population. For example, an increasing median age indicates an aging population, which can be a sign of a declining population in terms of birth rates and workforce participation.

Age 2021 2017
(Years) Male Female Male Female
0 to 9 1,028 -5.49% 911 +5.55% 970 962
10 to 19 988 +8.12% 1,077 -13.81% 1,070 932
20 to 29 868 -3.07% 867 -7.72% 838 802
30 to 39 987 +5.67% 858 +11.1% 1,035 946
40 to 49 911 -14.67% 1,009 -17.6% 775 837
50 to 59 1,279 -12.07% 1,120 -1.4% 1,129 1,100
60 to 69 835 +23.24% 949 +4.19% 1,044 984
70+ 931 -2.76% 1,306 -3.61% 904 1,259

Median Household Income

The latest median household income of Clark County, Illinois is $66,067.00.

In simple terms, the median income is the middle income of a group of people. Half of the people in the group make more than the median income, and half make less. The median income is a good indicator of the overall income of a group of people, and can be used to compare against other metrics such as the average income, per capita income, and more.

Median Income by Age

We can also look at the median income by age to see how the median income varies by age, and how it compares to the overall median income for Clark County.

  • Under 25
    $28,293.00
  • 25 to 44
    $85,000.00
  • 45 to 64
    $74,458.00
  • 65 and over
    $45,903.00

Average Household Income

Whenever we ask what is the average household income in Clark County, we are actually talking about the mean household income.

This is calculated by adding up all the incomes of all the households in Clark County, and then dividing that number by the total number of households. This is a good way to get a general idea of the average income of a group of people, but it can be skewed by a very high or very low incomes.

The average household income of Clark County, Illinois is currently $78,124.00.

In terms of accurately summarizing income at a geographic level, the median income is a better metric than the average income because it isn't affected by a small number of very high or very low incomes.

If you had an area where the average income was greater than the median, it can mean that there is significant income inequality, with income being concentrated in a small number of wealthy households.

3.50% of households in Clark County are classed as high income households (making $200,000+ per year).

Household Income Tiers

The US Census Bureau divides households into income tiers based on the median income for the area. This is a good way to compare the income of Clark County against other areas.

  • Less than $24,999
    16.62%
  • $25,000 to $49,999
    22.07%
  • $50,000 to $74,999
    17.46%
  • $75,000 to $99,999
    16.16%
  • $100,000 to $149,999
    19.82%
  • $150,000 to $199,999
    4.37%
  • $200,000 or more
    3.50%

Per Capita Income

The per capita income in Clark County is $32,136.00.

Per capita income is the average income of a person in a given area. It is calculated by dividing the total income of Clark County by the total population of Clark County.

This is different from the average or mean income because it includes and accounts for all people in Clark County, Illinois, including people like children, the elderly, unemployed people, retired people, and more.

Education Levels

We can also look at the education levels in Clark County to see how many people have a high school degree, a bachelor's degree, or a graduate degree.

Educational attainment is a good indicator of the overall education level of a population, and can be used to compare against other metrics such as the average income, per capita income, and more to see how education levels affect income, unemployment rates, and more.

  • Master's degree or higher
    10.50%
  • Bachelor's degree
    23.19%
  • Some college or associate's degree
    13.52%
  • High school diploma or equivalent
    50.74%
  • Less than high school diploma
    2.05%

Employment

Employment rates are all based around the total population in Clark County that are over the age of 16.

The total population of Clark County over the age of 16 is 12,345.

Of those people, a total of 61.60% are working or actively looking for work. This is called the labor force participation rate.

The participation rate is a useful market measure because it shows the relative amount of labor resources available to the economy.

The employment to total population rate in Clark County is 59.10%.

Employment by Age

We can look at the employment rates by age to see how it compares to the overall employment rate.

Age Population Participation Unemployment Rate
16 to 19 years 692 52.50% 19.80%
20 to 24 years 785 87.90% 1.40%
25 to 29 years 855 86.30% 4.90%
30 to 34 years 858 80.80% 4.00%
35 to 44 years 1,776 83.20% 0.70%
45 to 54 years 2,002 74.00% 2.40%
55 to 59 years 1,186 88.40% 9.50%
60 to 64 years 1,149 58.40% 1.20%
65 to 74 years 1,701 21.60% 2.70%
75 years and over 1,341 5.40% 0.00%

Employment by Race

Another very interesting employment statistic we can look at is the employment and unemployment rates by race in Clark County. The table below shows the rates for each of the ethnicity groups types defined by the US Census Bureau.

Age Population Participation Unemployment Rate
White 11,971 61.90% 4.10%
Black or African American 58 55.20% 21.90%
American Indian and Alaska Native 9 0.00% 0.00%
Asian 77 90.90% 0.00%
Native Hawaiian and Other Pacific Islander 0 0.00% 0.00%
Other 8 100.00% 0.00%
Two or more races 222 38.30% 0.00%
Hispanic or Latino 176 63.10% 0.00%
Not Hispanic or Latino 11,966 61.90% 4.10%

Occupations

In this section we can look at the most common occupations in Clark County as well as the gender breakdown and earnings of them.

The total population of civilian employees that are 16 years old or older in Clark County is 7,291, with median earnings of $38,885.00.

Women in Clark County, Illinois earning approximately 57.60% of the men's earnings.

Population Earnings
Total 7,291 $38,885.00
Male 3,933 $51,979.00
Female 3,358 $29,931.00

Occupations by Category

In the table below, we can break down the population and earnings even further by occupation. The list of occupation categories below will show you how many people are employed in each category and the median earnings of each profession.

Occupation Employed Earnings
Management 691 $65,410.00
Business and Financial 200 $36,250.00
Computer and Mathematical 65 $75,642.00
Architecture and Engineering 130 $84,444.00
Life, Physical, and Social Science 14 $0.00
Community and Social Service 125 $44,028.00
Legal 26 $84,167.00
Educational and Library 521 $48,260.00
Arts, Design, Entertainment, Sports, and Media 127 $20,938.00
Healthcare Practitioners 494 $50,144.00
Healthcare Support 194 $27,500.00
Firefighters and Protective Service 42 $7,283.00
Law Enforcement 112 $54,853.00
Food Preparation and Serving 333 $11,147.00
Building and Grounds Cleaning 340 $14,745.00
Personal Care and Service 216 $15,852.00
Sales 499 $36,016.00
Office and Administrative Support 714 $32,740.00
Farming, Fishing, and Forestry 111 $27,228.00
Construction and Extraction 485 $50,938.00
Installation, Maintenance, and Repair 290 $43,421.00
Production 1,019 $39,629.00
Transportation and Material Moving 257 $75,859.00

Occupations by Gender

The table below shows the same occupations from the list above, but we have split them by male and female to see how many male and females work in each occupation, the median earnings, and the male to female ratio of earnings.

That last metric is important because it can be used to look at the gender pay gap between men and women.

Occupation Male Female
Population Earnings Population Earnings
Management 552 $66,523.00 139 $50,625.00
Business and Financial 83 $35,625.00 117 $38,177.00
Computer and Mathematical 56 $75,946.00 9 $0.00
Architecture and Engineering 117 $90,417.00 13 $0.00
Life, Physical, and Social Science 0 $0.00 14 $0.00
Community and Social Service 59 $52,083.00 66 $43,182.00
Legal 11 $0.00 15 $49,375.00
Educational and Library 162 $70,298.00 359 $41,866.00
Arts, Design, Entertainment, Sports, and Media 38 $45,938.00 89 $20,188.00
Healthcare Practitioners 25 $0.00 469 $50,330.00
Healthcare Support 20 $32,083.00 174 $26,638.00
Firefighters and Protective Service 6 $0.00 36 $0.00
Law Enforcement 90 $57,250.00 22 $0.00
Food Preparation and Serving 112 $11,615.00 221 $10,250.00
Building and Grounds Cleaning 209 $14,718.00 131 $14,792.00
Personal Care and Service 11 $0.00 205 $15,540.00
Sales 226 $52,955.00 273 $16,397.00
Office and Administrative Support 134 $58,426.00 580 $30,581.00
Farming, Fishing, and Forestry 111 $27,228.00 0 $0.00
Construction and Extraction 480 $51,080.00 5 $0.00
Installation, Maintenance, and Repair 290 $43,421.00 0 $0.00
Production 729 $50,304.00 290 $30,660.00
Transportation and Material Moving 237 $77,422.00 20 $0.00

Households and Family Size

A household defined bu the US Census Bureau is a group of people who occupy a housing unit. A housing unit is a house, apartment, mobile home, group of rooms, or single room occupied as separate living quarters.

There are currently 6,379 households in Clark County, with an average household size of 2.41 people.

A family is defined as a group of two or more people related by birth, marriage, or adoption who live together in the same household.

There are 4,611 families in Clark County with an average family size of 2.8 people.

Households by Marital Status

The four categories of household by marital status are:

  • Married-couple family
  • Male householder with no spouse present
  • Female household with no spouse present
  • Nonfamily household

The table below shows the total number of households and families, with the average sizes of each.

Married Male Female Nonfamily
Total Households 3,555 374 682 1,768
Average Household Size 2.88 3.54 2.6 1.15
Total Families 3,555 374 682 0
Average Household Size 2.87 2.83 2.41 0

Poverty

Of the 4,611 families in Clark County, 7.40% are considered to be below the poverty threshold.

The table below shows the latest poverty thresholds in Clark County:

Household Size Poverty Threshold
1 Person $14,580.00
2 People $19,720.00
3 People $24,860.00
4 People $30,000.00
5 People $35,140.00
6 People $40,280.00
7 People $45,420.00
8 People $50,560.00

Housing

There are 7,378 housing units in Clark County, Illinois.

The table below shows the split between occupied and vacant units:

Total Percentage
Occupied 6,379 86.46%
Vacant 999 13.54%

15.36% of the total 7,378 housing units in Clark County are rental units. This is approximately 1,133 properties.

For owner-occupied housing units, a total of 5,104 are occupied by the owner - or 69.18% of the total.

Rental Rates

The median rent for a property in Clark County is $733.00.

In the chart below, we can look at the number of rental properties in Clark County that fall into a particular rent range. These can then be used to compare with other areas, or to see how they have changed over time.

  • No rent paid
    142
  • Less than $500
    227
  • $500 to $999
    773
  • $1,000 to $1,499
    97
  • $1,500 to $1,999
    0
  • $2,000 to $2,499
    6
  • $2,500 to $2,999
    4
  • $3,000 or more
    26

Property Value

The median value of a property in Clark County is $102,200.00.

Just like with rental rates, we can look at the number of properties in Clark County that fall into a particular value range.

  • Less than $50,000
    695
  • $50,000 to $99,999
    1,807
  • $100,000 to $149,999
    1,068
  • $150,000 to $199,999
    626
  • $200,000 to $299,999
    519
  • $300,000 to $499,999
    253
  • $500,000 to $999,999
    68
  • $1,000,000 or more
    68

Property Age

We can also look at the age of properties in Clark County. The chart below shows the number of properties in Clark County that fall into a particular age range.

  • 1939 or earlier
    1,801
  • 1940 to 1949
    544
  • 1950 to 1959
    767
  • 1960 to 1969
    833
  • 1970 to 1979
    1,111
  • 1980 to 1989
    574
  • 1990 to 1999
    584
  • 2000 to 2009
    864
  • 2010 to 2013
    300
  • 2014 or later
    0

Vehicles per Household

The number of vehicles available per household can be a good indicator of the level of affluence in an area. The chart below shows the number of households in Clark County that have a particular number of vehicles available.

  • No vehicles available
    299
  • 1 vehicle available
    1,626
  • 2 vehicles available
    2,529
  • 3 or more vehicles available
    1,925

Commuting to Work

In this section, we can also look at how people in Clark County get to work. The chart below shows the number of people in Clark County that commute to work in a particular way.

25.6 minutes is the average travel time to work for people in Clark County.

These commute times can be compared to other date like income and educational levels to see how they relate to each other and if there are any trends in the data that might suggest a correlation.

  • Less than 5 minutes
    890
  • 5 to 9 minutes
    817
  • 10 to 14 minutes
    732
  • 15 to 19 minutes
    730
  • 20 to 24 minutes
    851
  • 25 to 29 minutes
    405
  • 30 to 34 minutes
    910
  • 35 to 39 minutes
    354
  • 40 to 44 minutes
    160
  • 45 to 59 minutes
    424
  • 60 to 89 minutes
    199
  • 90 or more minutes
    347

Summary

We've covered a LOT of demographic and population data for Clark County, Illinois in this article! Hopefully you have found it very useful in your research of the area.

If you use any of the data found on this page, please consider linking back to USPopulation.org as the source and if you have any feedback or data requests, click here to contact us.

Places in Clark County, Illinois

We have data for 15 places in Clark County, Illinois. Click on a place below to see more information about the demographics of that place.