Johnson County, Indiana Age & Gender Distribution (2024)
Population distribution by age and gender for Johnson County, Indiana
Johnson County, Indiana Age & Gender Statistics (2024)
Total Population
166,315
Median Age
38.0
Male Median
36.9
Female Median
39.1
Johnson County, Indiana Population Growth

Johnson County, Indiana Demographic Trend
Since 2010, the population of has changed by +22.3%%.
+22.3%% Growth
Johnson County, Indiana Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Johnson County, Indiana Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 38.0 | 166,315 |
| 2023 | 38.1 | 163,983 |
| 2022 | 37.9 | 161,952 |
| 2021 | 37.8 | 159,739 |
| 2020 | 37.6 | 156,148 |
| 2019 | 37.5 | 153,716 |
| 2018 | 37.4 | 151,564 |
| 2017 | 37.3 | 149,359 |
| 2016 | 37.4 | 147,567 |
| 2015 | 37.3 | 145,645 |
| 2014 | 37.2 | 143,789 |
| 2013 | 37.1 | 141,796 |
| 2012 | 37.1 | 140,033 |
| 2011 | 36.8 | 138,227 |
| 2010 | 36.4 | 135,994 |
Johnson County, Indiana Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.9% |
| 5–17 | 18.3% |
| 18–24 | 8.1% |
| 25–34 | 13.5% |
| 35–54 | 26.5% |
| 55–64 | 12.0% |
| 65+ | 15.7% |
Dependency Ratios for Johnson County, Indiana
- Total Dependency Ratio:
- 66.7
- Youth Dependency:
- 40.5
- Old-Age Dependency:
- 26.2
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Johnson County, Indiana
The median age in Johnson County, Indiana is 38.0 years.
According to latest Census data, the total population of Johnson County, Indiana is 166,315.
In Johnson County, Indiana, seniors (ages 65+) make up 15.7% of the population, while children under 18 represent 18.3%.
Based on historical data since 2010, the population in Johnson County, Indiana is aging.