The median income of DeKalb County residents was an inflation-adjusted $22,926 per year. DeKalb County had 7,362 households in 2017, with a population of 19,380.
The county with the highest median resident income in the state was Williamson County. Williamson County's median income was $42,496 per year after adjusting for inflation – $19,570 more than DeKalb County. It had 73,160 households in 2017 and a population of 212,161.
Fentress County had the lowest annual resident income among counties in Tennessee, with a median income of only $15,980 per year. That was $6,946 less than the median income in DeKalb County at the time. Fentress County had 7,385 households in 2017 and a population of 17,940.
The table below shows the state's counties ranked by median annual resident earnings in 2017.