Highest salary at Marion County in year 2021 was $81,660. Number of employees at Marion County in year 2021 was 196. Average annual salary was $24,665 and median salary was $26,858. Marion County average salary is 47 percent lower than USA average and median salary is 38 percent lower than USA median salary. From 2020 to 2021, the average salary of employees at this employer increased 6.4 percent, the median salary increased 10.7 percent.