Decatur County, Tennessee Age & Gender Distribution (2024)
Population distribution by age and gender for Decatur County, Tennessee
Decatur County, Tennessee Age & Gender Statistics (2024)
Total Population
11,579
Median Age
45.8
Male Median
44.2
Female Median
48.6
Decatur County, Tennessee Population Growth

Decatur County, Tennessee Demographic Trend
Since 2010, the population of has changed by -1.2%%.
-1.2%% Growth
Decatur County, Tennessee Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Decatur County, Tennessee Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 45.8 | 11,579 |
| 2023 | 45.9 | 11,499 |
| 2022 | 45.8 | 11,483 |
| 2021 | 45.6 | 11,460 |
| 2020 | 46.5 | 11,663 |
| 2019 | 46.4 | 11,686 |
| 2018 | 45.8 | 11,683 |
| 2017 | 45.7 | 11,681 |
| 2016 | 45.5 | 11,703 |
| 2015 | 45.3 | 11,686 |
| 2014 | 45.0 | 11,675 |
| 2013 | 44.8 | 11,695 |
| 2012 | 44.3 | 11,732 |
| 2011 | 44.0 | 11,741 |
| 2010 | 44.0 | 11,716 |
Decatur County, Tennessee Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.2% |
| 5–17 | 15.0% |
| 18–24 | 6.0% |
| 25–34 | 11.0% |
| 35–54 | 24.5% |
| 55–64 | 14.5% |
| 65+ | 23.8% |
Dependency Ratios for Decatur County, Tennessee
- Total Dependency Ratio:
- 78.5
- Youth Dependency:
- 36.0
- Old-Age Dependency:
- 42.5
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Decatur County, Tennessee
The median age in Decatur County, Tennessee is 45.8 years.
According to latest Census data, the total population of Decatur County, Tennessee is 11,579.
In Decatur County, Tennessee, seniors (ages 65+) make up 23.8% of the population, while children under 18 represent 15.0%.
Based on historical data since 2010, the population in Decatur County, Tennessee is aging.