Johnson County, Tennessee Demographics 2026

Population Overview

Johnson County is located in Tennessee with a total population of 18,073. It is the 70th most populous county out of 95 in Tennessee. The county encompasses 1 Census-designated place.

Age Demographics

The median age in Johnson County is 46.4 years. This is 19% higher than the state median of 38.9 years.

Economy, Income & Housing

The median household income in Johnson County is $52,152. This is 22% lower than the state median of $67,097. It is also 34% lower than the national median of $78,538. The poverty rate stands at 22.1%. This is 60% higher than the state poverty rate of 13.8%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 3.7%. This is 22% lower than the state rate of 4.7%. The median home value is $175,500. Housing costs are 32% lower than the state median of $256,800. The home-value-to-income ratio is 3.4x. 78.6% of occupied housing units are owner-occupied. This homeownership rate is 17% higher than the state average of 67.0%.

Race & Ethnicity

Johnson County has a predominantly White (non-Hispanic) population, comprising 88.0% of all residents. Black or African American residents account for 3.7%. The Black or African American population (3.7%) is well below the state average of 15.7%. The Hispanic or Latino population (3.0%) is well below the state average of 7.1%. The Asian population (0.2%) is well below the state average of 1.8%.

Education

15.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 48% lower than the state rate of 30.4%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 81.3%.

Data Sources & Methodology

All figures for Johnson County come from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023), with comparisons drawn against Tennessee and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.