Highest Nassau employee salary in year 2022 was $349,649. Nassau employees number in year 2022 was 8,187. Nassau average salary was $96,239 and median salary was $84,136. According to the last payroll, Nassau average salary is 29 percent higher than USA average and 65 percent higher than New York state average. Nassau employee salaries are usually between $49,430 and $130,763. Top 10% of highest-earning employees have salaries ranging from $189,146 to $349,649.