Decatur County is a county of 11,579 people in Tennessee. Four-year degrees are less common here than nationally, at 14% of adults. The median age is 45.8, about 7 years above the US median. The typical home is worth $139,600, having more than doubled since 2000. That trails the Tennessee median by roughly 35%. 2% of residents were born outside the United States.
At a glance
Lower income
median household income $45,375, below the US median
US median: $82,259
Older
median age 45.8
US median: 38.9
Less educated
14% hold a bachelor's degree
US average: 36%
Less affordable
home values up 36%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Decatur County
What changed most since 1990
White share95.2% → 90.1%(−5.2 pts)US over the same years: −17.8 pts
Homes owned by their occupants80.5% → 74.3%(−6.2 pts)US over the same years: +0.9 pts
Hispanic share0.6% → 3.7%(+3.1 pts)US over the same years: +9.9 pts
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)15.1%(73)
US avg: 26.4%
Gulf War (1990s)14.5%(70)
US avg: 24.3%
Vietnam era57%(276)
US avg: 33.1%
Korean War1%(5)
US avg: 4.5%
World War II1.2%(6)
US avg: 1%
Share of the 484 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Decatur County, decade by decade
Decatur County population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
10,472
$43,021
$82,322
4.8%
11.5
2000
11,731
$52,356
$102,377
7.3%
15.8
2010
11,757
$43,797
$95,665
10.4%
16.4
2020
11,435
$48,953
$118,537
14.3%
20.1
2024
11,579
$45,375
$139,600
14.0%
23.3
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
