Highest salary at Guernsey County in year 2016 was $127,463. Number of employees at Guernsey County in year 2016 was 613. Average annual salary was $24,980 and median salary was $25,895. Guernsey County average salary is 47 percent lower than USA average and median salary is 40 percent lower than USA median salary. From 2015 to 2016, the average salary of employees at this employer increased 6.4 percent, the median salary increased 6.2 percent.