Highest salary at Boone County in year 2022 was $186,012. Number of employees at Boone County in year 2022 was 254. Average annual salary was $52,716 and median salary was $49,422. Boone County average salary is 12 percent higher than USA average and median salary is 14 percent higher than USA median salary. From 2021 to 2022, the average salary of employees at this employer increased 17.0 percent, the median salary increased 14.5 percent.