What does this measure?
The median age, in years, of a geographic area in a given time period.
Why is this important?
Population measures provide insight on the changing size and face of communities, and an area's needs and assets. For example, areas with large or growing populations of elderly people or children may face challenges in providing needed services and generating enough tax revenue to support those services.
How is our region performing?
In 2010-14, the median age of the region's population was 40.3 years, slightly higher than the state's median of 38.3 years and the nation's median of 37.4. Loudon County had the highest median age in 2010-14 (46.0), closely followed by Roane (45.8). Knox County had the lowest median age of the region by far in 2010-14 (37.3). From 2000 to 2005-09, the median age in the region rose 4% from 36.8 to 38.2, and rose by another 5% from 2005-09 to 2010-14. Over both periods, the median age in the region increased more than in the state and the nation. All counties in the region experienced an increase during the same time period, with Loudon's median age growing the most (increase of 5.9 years, or 16%, from 2000 to 2010-14). Knox County saw the smallest median increase of 1.3 from 2000 to 2010-14.
Notes about the data
The multiyear figures are from the Census Bureau's American Community Survey. The bureau combined five years of responses to the survey to provide estimates for smaller geographic areas and increase the precision of its estimates. The survey provides data on characteristics of the population that used to be collected only during the decennial census.