Highest salary at Smyth County in year 2021 was $136,073. Number of employees at Smyth County in year 2021 was 257. Average annual salary was $27,240 and median salary was $19,369. Smyth County average salary is 42 percent lower than USA average and median salary is 55 percent lower than USA median salary. From 2020 to 2021, the average salary of employees at this employer increased 5.7 percent.