Highest salary at Massac County in year 2024 was $156,348. Number of employees at Massac County in year 2024 was 84. Average annual salary was $49,595 and median salary was $51,310. Massac County average salary is 6 percent higher than USA average and median salary is 18 percent higher than USA median salary. From 2023 to 2024, the average salary of employees at this employer increased 3.3 percent.