Highest salary at Clinton County in year 2016 was $150,144. Number of employees at Clinton County in year 2016 was 1,040. Average annual salary was $37,980 and median salary was $41,893. Clinton County average salary is 19 percent lower than USA average and median salary is 4 percent lower than USA median salary. From 2015 to 2016, the average salary of employees at this employer increased 0.2 percent, the median salary increased 1.6 percent.