Highest salary at Benton County in year 2021 was $200,087. Number of employees at Benton County in year 2021 was 737. Average annual salary was $59,352 and median salary was $57,569. Benton County average salary is 27 percent higher than USA average and median salary is 32 percent higher than USA median salary. From 2020 to 2021, the average salary of employees at this employer increased 1.3 percent, the median salary increased 0.2 percent.