The 2020 median household income in the U.S. was $67,521, a decrease of 2.9% from 2019. COVID-19 in 2020 drastically altered income and poverty levels, along with consumer habits and job opportunities.Stacker compiled a list of the highest-earning counties in Tennessee using data from the U.S. Census Bureau. Counties are ranked by 2020 5-year estimate median household income. Area county rankings include #46 Sullivan County earning 47-thousand dollars a year per household, Washington County at #37.