Highest salary at Jefferson County in year 2024 was $55,308. Number of employees at Jefferson County in year 2024 was 73. Average annual salary was $23,038 and median salary was $26,450. Jefferson County average salary is 51 percent lower than USA average and median salary is 39 percent lower than USA median salary. From 2023 to 2024, the average salary of employees at this employer increased 2.5 percent, the median salary increased 4.8 percent.