Highest salary at Somerset County in year 2018 was $88,831. Number of employees at Somerset County in year 2018 was 84. Average annual salary was $43,182 and median salary was $44,679. Somerset County average salary is 8 percent lower than USA average and median salary is 3 percent higher than USA median salary. From 2017 to 2018, the median salary increased 2.8 percent.