Warren County, IL Population

Overview

16,887

Total Population

39.6

Median age

50.68%

Female population %

97.3:100

Gender ratio (M:F)

15-19 years

Largest age group

57.9

Total dependency ratio

White

Largest racial group

1,686

Hispanic population

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

TABLE OF CONTENTS

Age

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

The median age in Warren County is 39.6, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Warren County's population under 18 was 21.79%, compared to the 22.51% nationwide.
Warren County's elderly or the senior population (over 65 age) was 18.88% as compared to 16.04% nationwide.
Of the total population in Warren County, 17.78% were under the age of 15, 21.40% aged 15 to 29, 41.94% aged 30 to 64, 16.46% aged 65 to 84, and 2.42% were 85 years of age and older.

There are 229 more females than males in Warren County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 50.68% females and 49.32% males in Warren County, IL.
The Warren County, IL gender ratio is 97.3:100 i.e. 97.3 men to 100 women (0.973).
For male population, the largest age group is 20-24 years with a population of 740.
For the female population, the largest age group is 15-19 years with a population of 790.

Warren County's population has become increasingly diverse:

Racial distribution of Warren County population: 87.08% are White, 3.87% are Black or African American, 1.21% are American Indian and Alaska Native, 1.49% are Asian, 0.29% are Native Hawaiian and other Pacific Islander, 4.44% are some other race and 1.62% are multiracial.
Warren County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 1,686 is Hispanic or Latino (of any race), and 15,201 (90.02% of the total population) is Non-Hispanic.
The largest racial group in Warren County is White with a population of 14,705 (87.08% of the total population).

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

The peak population was 18,648 in the year 2000
From 2000 to 2010, Warren County's population decreased by 938 (5.03%), as compared to the national growth of 9.63%.
From 2010 to 2020, Warren County's population decreased by 882 (4.98%), 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, Warren County's population was lowest in year 2022 at 16,354.