Highest salary at Sussex County in year 2023 was $176,247. Number of employees at Sussex County in year 2023 was 493. Average annual salary was $58,332 and median salary was $49,843. Sussex County average salary is 24 percent higher than USA average and median salary is 15 percent higher than USA median salary. From 2022 to 2023, the average salary of employees at this employer increased 0.1 percent, the median salary increased 0.9 percent.