Highest salary at Iosco County in year 2022 was $162,347. Number of employees at Iosco County in year 2022 was 140. Average annual salary was $36,794 and median salary was $37,705. Iosco County average salary is 21 percent lower than USA average and median salary is 13 percent lower than USA median salary. From 2021 to 2022, the average salary of employees at this employer increased 13.0 percent, the median salary increased 4.9 percent.