In 2019, Johnson County, TN had a population of 17.8k people with a median age of 46 and a median household income of $36,004. Between 2018 and 2019 the population of Johnson County, TN declined from 17,789 to 17,753, a −0.202% decrease and its median household income grew from $34,151 to $36,004, a 5.43% increase.
The 5 largest ethnic groups in Johnson County, TN are White (Non-Hispanic) (92.3%), Black or African American (Non-Hispanic) (3.45%), White (Hispanic) (1.74%), Two+ (Non-Hispanic) (1.2%), and American Indian & Alaska Native (Non-Hispanic) (0.507%). 0% of the households in Johnson County, TN speak a non-English language at home as their primary language, and 98.3% of the residents in Johnson County, TN are U.S. citizens.
In 2019, the median property value in Johnson County, TN was $133,100, and the homeownership rate was 75.6%. Most people in Johnson County, TN drove alone to work, and the average commute time was 22.9 minutes. The average car ownership in Johnson County, TN was 2 cars per household.