Highest salary at Winnebago County in year 2016 was $205,466. Number of employees at Winnebago County in year 2016 was 1,641. Average annual salary was $40,304 and median salary was $36,279. Winnebago County average salary is 14 percent lower than USA average and median salary is 17 percent lower than USA median salary. From 2015 to 2016, the average salary of employees at this employer increased 3.7 percent, the median salary increased 4.2 percent.