Highest salary at Knox County in year 2022 was $88,312. Number of employees at Knox County in year 2022 was 86. Average annual salary was $38,714 and median salary was $41,753. Knox County average salary is 17 percent lower than USA average and median salary is 4 percent lower than USA median salary. From 2021 to 2022, the average salary of employees at this employer increased 21.7 percent, the median salary increased 16.6 percent.