In 2018, Johnson County, TN had a population of 17.8k people with a median age of 46.1 and a median household income of $34,151. Between 2017 and 2018 the population of Johnson County, TN declined from 17,846 to 17,789, a -0.319% decrease and its median household income grew from $32,994 to $34,151, a 3.51% increase.
The 5 largest ethnic groups in Johnson County, TN are White (Non-Hispanic) (92.7%), Black or African American (Non-Hispanic) (3.28%), White (Hispanic) (1.53%), Two+ (Non-Hispanic) (1.15%), and American Indian & Alaska Native (Non-Hispanic) (0.478%). 0% of the households in Johnson County, TN speak a non-English language at home as their primary language, and 99% of the residents in Johnson County, TN are U.S. citizens.
In 2018, the median property value in Johnson County, TN was $118,700, and the homeownership rate was 77.6%. Most people in Johnson County, TN drove alone to work, and the average commute time was 23.3 minutes. The average car ownership in Johnson County, TN was 2 cars per household.