Highest salary at Kootenai County in year 2021 was $143,475. Number of employees at Kootenai County in year 2021 was 1,036. Average annual salary was $45,536 and median salary was $43,196. Kootenai County average salary is 3 percent lower than USA average and median salary is 1 percent lower than USA median salary. From 2020 to 2021, the average salary of employees at this employer increased 2.6 percent, the median salary increased 3.6 percent.