Highest salary at Sullivan County in year 2023 was $138,458. Number of employees at Sullivan County in year 2023 was 218. Average annual salary was $45,523 and median salary was $43,325. Sullivan County average salary is 3 percent lower than USA average and median salary is the same as USA median salary. From 2022 to 2023, the average salary of employees at this employer increased 2.1 percent.