Clinton County, IL Population

Overview

37,048

Total Population

41.2

Median age

47.86%

Female population %

109:100

Gender ratio (M:F)

55-59 years

Largest age group

53.0

Total dependency ratio

White

Largest racial group

1,191

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Clinton County's population is old compared to the rest of the country:

The median age in Clinton County is 41.2, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Clinton County's population under 18 was 21.42%, compared to the 22.51% nationwide.
Clinton County's elderly or the senior population (over 65 age) was 16.96% as compared to 16.04% nationwide.
Of the total population in Clinton County, 17.70% were under the age of 15, 17.11% aged 15 to 29, 48.23% aged 30 to 64, 14.85% aged 65 to 84, and 2.11% were 85 years of age and older.

There are 1,588 less females than males in Clinton County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 47.86% females and 52.14% males in Clinton County, IL.
The Clinton County, IL gender ratio is 109:100 i.e. 109 men to 100 women (1.090).
For male population, the largest age group is 35-39 years with a population of 1,710.
For the female population, the largest age group is 55-59 years with a population of 1,406.

Clinton County's population has become increasingly diverse:

Racial distribution of Clinton County population: 92.03% are White, 3.36% are Black or African American, 0.03% are American Indian and Alaska Native, 0.64% are Asian, 0.48% are some other race and 3.45% are multiracial.
Clinton County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 1,191 is Hispanic or Latino (of any race), and 35,857 (96.79% of the total population) is Non-Hispanic.
The largest racial group in Clinton County is White with a population of 34,097 (92.03% of the total population).

Clinton County's population has already reached its peak and is showing a trend of decline:

The peak population was 38,024 in the year 2011
From 2000 to 2010, Clinton County's population increased by 2,283 (6.42%), as compared to the national growth of 9.63%.
From 2010 to 2020, Clinton County's population decreased by 920 (2.43%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, Clinton County's population was lowest in year 2000 at 35,550.