Highest salary at Franklin County in year 2017 was $153,486. Number of employees at Franklin County in year 2017 was 191. Average annual salary was $37,816 and median salary was $36,941. Franklin County average salary is 19 percent lower than USA average and median salary is 15 percent lower than USA median salary. From 2016 to 2017, the average salary of employees at this employer increased 1.5 percent, the median salary increased 1.3 percent.