Population 11,579 · Census ACS 2020–24
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Population and households in Decatur County
Household size in Decatur County
| Period | Decatur County | Tennessee | U.S. |
|---|---|---|---|
| 2006–10 | 2.31 | 2.53 | 2.68 |
| 2010–14 | 2.28 | 2.57 | 2.73 |
| 2015–19 | 2.58 | 2.57 | 2.71 |
| 2020–24 | 2.53 | 2.53 | 2.65 |
| Change | +0.22 | +0.00 | −0.03 |
The average household in Decatur County has 2.53 people, a bit under the U.S. average of 2.65. Tennessee as a whole looks much the same. Household size has climbed from 2.31 in 2006–10, even as the national average fell.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Decatur County
| Period | Decatur County | Tennessee | U.S. |
|---|---|---|---|
| 2006–10 | 44.1 | 38.3 | 37.7 |
| 2010–14 | 45.5 | 39.2 | 38.6 |
| 2015–19 | 46.4 | 39.9 | 39.6 |
| 2020–24 | 46.7 | 39.9 | 40.1 |
| Change | +2.6 | +1.6 | +2.3 |
Decatur County skews older: half of its residents are older than 46.7, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families. Since 2006–10, the median age has climbed from 44.1, mirroring the country. Of Tennessee's 95 counties, only five are older.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Decatur County
| Period | Decatur County | Tennessee | U.S. |
|---|---|---|---|
| 2006–10 | 10.6% | 12.2% | 12.3% |
| 2010–14 | 11.7% | 12.0% | 12.3% |
| 2015–19 | 8.1% | 11.6% | 11.6% |
| 2020–24 | 8.6% | 11.8% | 11.6% |
| Change | −2.0 pts | −0.4 pts | −0.6 pts |
Single parents head only 8.6% of households in Decatur County, well below the national share of 11.6%. Since 2006–10, the single-parent share has fallen 2.0 points, a much bigger shift than nationally. Decatur County has a lower share of single-parent households than at least four in five Tennessee counties.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Decatur County
Renters in Decatur County
| Period | Decatur County | Tennessee | U.S. |
|---|---|---|---|
| 2006–10 | 21.9% | 30.4% | 33.3% |
| 2010–14 | 22.3% | 32.9% | 35.6% |
| 2015–19 | 19.0% | 33.7% | 36.0% |
| 2020–24 | 25.7% | 33.1% | 34.8% |
| Change | +3.7 pts | +2.6 pts | +1.5 pts |
About a quarter of households in Decatur County rent their homes (25.7%), below the national share of 34.8%; the rest own. About six in ten owners (59.0%) have paid off their mortgages, well above the national share of 39.8%. The renter share is up 3.7 points from 2006–10, mirroring the country.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Decatur County
| Period | Decatur County | Tennessee | U.S. |
|---|---|---|---|
| 2006–10 | 24.4% | 11.5% | 11.4% |
| 2010–14 | 23.1% | 11.8% | 11.4% |
| 2015–19 | 32.6% | 11.8% | 11.1% |
| 2020–24 | 27.4% | 10.1% | 9.6% |
| Change | +3.0 pts | −1.4 pts | −1.8 pts |
Vacancy is high in Decatur County: 27.4% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand. Vacancy has risen 3.0 points since 2006–10, even as the national rate fell.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Decatur County
| Period | Decatur County | Tennessee | U.S. |
|---|---|---|---|
| 2006–10 | 1978 | 1981 | 1974 |
| 2010–14 | 1981 | 1982 | 1975 |
| 2015–19 | 1981 | 1983 | 1977 |
| 2020–24 | 1984 | 1986 | 1980 |
| Change | +7 | +6 | +6 |
Homes in Decatur County are a bit newer than the national norm: the median home was built in 1984, versus 1980 across the U.S. The median year built has moved up from 1978 in 2006–10, a sign of steady new building. Newer construction is concentrated in the southeast, while the west has the oldest housing.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Decatur County
| Period | Decatur County | Tennessee | U.S. |
|---|---|---|---|
| 2006–10 | $610 | $761 | $965 |
| 2010–14 | $532 | $837 | $1,040 |
| 2015–19 | $527 | $961 | $1,213 |
| 2020–24 | $755 | $1,286 | $1,571 |
| Change | +$145 | +$526 | +$606 |
The median renter in Decatur County pays $755 a month for rent and utilities, well below the national median of $1,571. Rents are up $145 a month from 2006–10, a 24% rise, a slower climb than the nation's. Rent takes 23.7% of the typical renter's income, comfortably under the 30% mark often used to define affordable rent. The priciest rents are in the west; the most affordable are in the east.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Decatur County
Bachelor's degrees in Decatur County
| Period | Decatur County | Tennessee | U.S. |
|---|---|---|---|
| 2006–10 | 10.5% | 23.9% | 28.4% |
| 2010–14 | 13.0% | 25.3% | 29.6% |
| 2015–19 | 14.7% | 27.9% | 32.1% |
| 2020–24 | 14.4% | 31.4% | 35.6% |
| Change | +3.9 pts | +7.5 pts | +7.2 pts |
Fewer adults in Decatur County have a four-year degree than in the country as a whole: 14.4%, against 35.6% nationally. The share with a degree is up 3.9 points from 2006–10, mirroring the country. College graduates are most concentrated in the northeast and least in the west.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Decatur County
| Period | Decatur County | Tennessee | U.S. |
|---|---|---|---|
| 2006–10 | 71.9% | 83.3% | 84.9% |
| 2010–14 | 80.1% | 85.4% | 86.1% |
| 2015–19 | 85.6% | 87.6% | 87.7% |
| 2020–24 | 84.1% | 89.9% | 89.3% |
| Change | +12.1 pts | +6.6 pts | +4.3 pts |
Nearly one in six adults in Decatur County never finished high school, well above the national share: only 84.1% have a diploma or equivalent, against 89.3% nationally. Since 2006–10, the share with a diploma has risen 12.1 points, in line with the national trend. Decatur County has a lower share of high school graduates than the great majority of Tennessee counties.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Decatur County
| Period | Decatur County | Tennessee | U.S. |
|---|---|---|---|
| 2006–10 | 13.8% | 8.6% | 8.1% |
| 2010–14 | 10.4% | 9.6% | 9.4% |
| 2015–19 | 8.0% | 5.4% | 5.6% |
| 2020–24 | 8.5% | 4.8% | 5.4% |
| Change | −5.3 pts | −3.8 pts | −2.7 pts |
Finding work has been harder in Decatur County: 8.5% of the labor force was out of work and looking, well above the national rate of 5.4%. Only three of Tennessee's 95 counties have higher unemployment. Since 2006–10, unemployment has fallen 5.3 points, as it has nationally.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Decatur County compared with nearby counties
| County | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Decatur County | 2.53 | 46.7 | 8.6% | 25.7% | 27.4% | 1984 | $755 | 14.4% | 84.1% | 8.5% |
| Perry County | 2.48 | 43.8 | 8.2% | 26.2% | 25.3% | 1990 | $810 | 12.5% | 88.7% | 4.8% |
| Henderson County | 2.58 | 41.2 | 13.3% | 26.8% | 15.1% | 1986 | $745 | 16.3% | 88.8% | 5.7% |
| Lewis County | 2.42 | 41.6 | 9.0% | 18.1% | 7.1% | 1989 | $722 | 10.3% | 86.7% | 3.5% |
| Madison County | 2.42 | 39.9 | 14.9% | 38.0% | 9.1% | 1985 | $1,160 | 26.6% | 90.2% | 7.1% |
| Crockett County | 2.52 | 40.4 | 15.2% | 28.4% | 9.9% | 1980 | $845 | 16.8% | 88.0% | 2.9% |
| Maury County | 2.55 | 39.3 | 10.4% | 29.1% | 8.3% | 1993 | $1,442 | 28.8% | 93.3% | 2.6% |
| Haywood County | 2.49 | 42.8 | 18.6% | 39.3% | 13.2% | 1978 | $827 | 14.3% | 83.2% | 6.2% |
| Lauderdale County | 2.52 | 38.4 | 16.8% | 35.6% | 13.7% | 1981 | $771 | 12.3% | 83.9% | 5.4% |
| Bedford County | 2.67 | 37.0 | 16.2% | 28.1% | 6.3% | 1991 | $1,083 | 16.8% | 84.9% | 4.1% |
| Cannon County | 2.58 | 41.8 | 12.7% | 21.6% | 10.8% | 1988 | $1,079 | 17.3% | 85.7% | 3.1% |
All figures 2020–24.
Counties with similar populations: Noxubee County, MS · Logan County, AR · Los Alamos County, NM · Luquillo Municipio, PR · Macon County, MO · Madison County, AR · Madison County, FL · Madison County, IA · Madison County, NC · Marengo County, AL
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Decatur County. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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