DeKalb County, Tennessee Age & Gender Distribution (2024)
Population distribution by age and gender for DeKalb County, Tennessee
DeKalb County, Tennessee Age & Gender Statistics (2024)
Total Population
20,959
Median Age
41.9
Male Median
39.4
Female Median
44.1
DeKalb County, Tennessee Population Growth

DeKalb County, Tennessee Demographic Trend
Since 2010, the population of has changed by +12.9%%.
+12.9%% Growth
DeKalb County, Tennessee Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
DeKalb County, Tennessee Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 41.9 | 20,959 |
| 2023 | 42.2 | 20,551 |
| 2022 | 42.1 | 20,209 |
| 2021 | 42.6 | 19,875 |
| 2020 | 42.6 | 20,104 |
| 2019 | 41.1 | 19,847 |
| 2018 | 41.2 | 19,601 |
| 2017 | 40.9 | 19,380 |
| 2016 | 40.9 | 19,159 |
| 2015 | 41.0 | 19,038 |
| 2014 | 40.9 | 18,968 |
| 2013 | 40.5 | 18,875 |
| 2012 | 40.2 | 18,770 |
| 2011 | 40.2 | 18,684 |
| 2010 | 39.7 | 18,569 |
DeKalb County, Tennessee Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 7.3% |
| 5–17 | 14.4% |
| 18–24 | 7.5% |
| 25–34 | 12.9% |
| 35–54 | 23.9% |
| 55–64 | 15.2% |
| 65+ | 18.8% |
Dependency Ratios for DeKalb County, Tennessee
- Total Dependency Ratio:
- 68.1
- Youth Dependency:
- 36.5
- Old-Age Dependency:
- 31.5
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for DeKalb County, Tennessee
The median age in DeKalb County, Tennessee is 41.9 years.
According to latest Census data, the total population of DeKalb County, Tennessee is 20,959.
In DeKalb County, Tennessee, seniors (ages 65+) make up 18.8% of the population, while children under 18 represent 14.4%.
Based on historical data since 2010, the population in DeKalb County, Tennessee is aging.