Highest salary at Cass County in year 2016 was $168,671. Number of employees at Cass County in year 2016 was 132. Average annual salary was $36,767 and median salary was $31,422. Cass County average salary is 22 percent lower than USA average and median salary is 28 percent lower than USA median salary. From 2015 to 2016, the average salary of employees at this employer increased 3.0 percent.