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

Population trends in
Figure 1: Annual population growth trend for (2010–2024).

Decatur County, Tennessee Demographic Trend

Since 2010, the population of has changed by -1.2%%.

-1.2%% Growth

Decatur County, Tennessee Age & Gender Pyramid

Population pyramid for

Figure 2: Population distribution by age and gender for 2024.


Decatur County, Tennessee Historical Population Data

YearMedian AgePopulation
202445.811,579
202345.911,499
202245.811,483
202145.611,460
202046.511,663
201946.411,686
201845.811,683
201745.711,681
201645.511,703
201545.311,686
201445.011,675
201344.811,695
201244.311,732
201144.011,741
201044.011,716

Decatur County, Tennessee Age Group Breakdown (2024)

Age CohortPercentage
Under 55.2%
5–1715.0%
18–246.0%
25–3411.0%
35–5424.5%
55–6414.5%
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.
Back to Overview