Highest salary at Carroll County in year 2021 was $143,803. Number of employees at Carroll County in year 2021 was 256. Average annual salary was $40,749 and median salary was $41,619. Carroll County average salary is 13 percent lower than USA average and median salary is 4 percent lower than USA median salary. From 2020 to 2021, the median salary increased 4.6 percent.