Jefferson County, Kansas Age & Gender Distribution (2024)
Population distribution by age and gender for Jefferson County, Kansas
Jefferson County, Kansas Age & Gender Statistics (2024)
Total Population
18,349
Median Age
44.2
Male Median
44.1
Female Median
44.4
Jefferson County, Kansas Population Growth
Jefferson County, Kansas Demographic Trend
Since 2010, the population of has changed by -3.7%%.
-3.7%% Growth
Jefferson County, Kansas Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Jefferson County, Kansas Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 44.2 | 18,349 |
| 2023 | 43.8 | 18,391 |
| 2022 | 43.2 | 18,387 |
| 2021 | 43.7 | 18,391 |
| 2020 | 43.9 | 18,974 |
| 2019 | 43.3 | 18,890 |
| 2018 | 44.2 | 18,888 |
| 2017 | 44.0 | 18,856 |
| 2016 | 43.7 | 18,880 |
| 2015 | 43.5 | 18,898 |
| 2014 | 43.5 | 18,932 |
| 2013 | 43.1 | 18,971 |
| 2012 | 42.9 | 19,036 |
| 2011 | 42.9 | 19,046 |
| 2010 | 42.2 | 19,059 |
Jefferson County, Kansas Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.1% |
| 5–17 | 16.9% |
| 18–24 | 6.6% |
| 25–34 | 10.9% |
| 35–54 | 24.2% |
| 55–64 | 16.3% |
| 65+ | 20.0% |
Dependency Ratios for Jefferson County, Kansas
- Total Dependency Ratio:
- 72.3
- Youth Dependency:
- 37.9
- Old-Age Dependency:
- 34.4
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Jefferson County, Kansas
The median age in Jefferson County, Kansas is 44.2 years.
According to latest Census data, the total population of Jefferson County, Kansas is 18,349.
In Jefferson County, Kansas, seniors (ages 65+) make up 20.0% of the population, while children under 18 represent 16.9%.
Based on historical data since 2010, the population in Jefferson County, Kansas is aging.