Overview
13,238
Total Population
43.4
Median age
45.17%
Female population %
121.4:100
Gender ratio (M:F)
55-59 years
Largest age group
58.6
Total dependency ratio
White
Largest racial group
409
Hispanic population
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Johnson County's population is old compared to the rest of the country:
- The median age in Johnson County is 43.4, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
- Johnson County's population under 18 was 19.25%, compared to the 22.51% nationwide.
- Johnson County's elderly or the senior population (over 65 age) was 21.11% as compared to 16.04% nationwide.
- Of the total population in Johnson County, 15.84% were under the age of 15, 17.46% aged 15 to 29, 45.60% aged 30 to 64, 18.11% aged 65 to 84, and 3.00% were 85 years of age and older.
Read more about Johnson County, IL population by age ➔
Gender
There are 1,280 less females than males in Johnson County:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 45.17% females and 54.83% males in Johnson County, IL.
- The Johnson County, IL gender ratio is 121.4:100 i.e. 121.4 men to 100 women (1.214).
- For male population, the largest age group is 55-59 years with a population of 558.
- For the female population, the largest age group is 5-9 years with a population of 530.
Read more about Johnson County, IL population by gender ➔
Race / Ethnicity
Johnson County's population has become increasingly diverse:
- Racial distribution of Johnson County population: 87.93% are White, 9.10% are Black or African American, 0.29% are Asian, 1.06% are some other race and 1.62% are multiracial.
- Johnson County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
- By ethnicity, 409 is Hispanic or Latino (of any race), and 12,829 (96.91% of the total population) is Non-Hispanic.
- The largest racial group in Johnson County is White with a population of 11,64 (87.93% of the total population).
Read more about Johnson County, IL population by race ➔
Year by year
Johnson County's population has already reached its peak and is showing a trend of decline:
- The peak population was 13,759 in the year 2007
- From 2000 to 2010, Johnson County's population decreased by 284 (2.20%), as compared to the national growth of 9.63%.
- From 2010 to 2020, Johnson County's population increased by 724 (5.75%), 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, Johnson County's population was lowest in year 2018 at 12,380.
Read more about Johnson County, IL population by year ➔
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates
- U.S. Census Bureau Population Estimates Population Estimates Program (PEP)