Highest salary at Grand Island Csd in year 2017 was $77,824. Number of employees at Grand Island Csd in year 2017 was 256. Average annual salary was $26,476 and median salary was $23,893. Grand Island Csd average salary is 44 percent lower than USA average and median salary is 45 percent lower than USA median salary. From 2016 to 2017, the average salary of employees at this employer increased 8.3 percent, the median salary increased 7.6 percent.