Highest salary at Mclean County in year 2016 was $165,258. Number of employees at Mclean County in year 2016 was 856. Average annual salary was $38,985 and median salary was $37,682. Mclean County average salary is 17 percent lower than USA average and median salary is 13 percent lower than USA median salary. From 2015 to 2016, the average salary of employees at this employer increased 3.6 percent, the median salary increased 6.8 percent.