Highest salary at SAU 21 in year 2021 was $146,308. Number of employees at SAU 21 in year 2021 was 18. Average annual salary was $67,974 and median salary was $69,555. SAU 21 average salary is 45 percent higher than USA average and median salary is 60 percent higher than USA median salary. From 2020 to 2021, the median salary increased 5.1 percent.