Highest salary at Hempstead in year 2011 was $236,604. Number of employees at Hempstead in year 2011 was 2,732. Average annual salary was $64,709 and median salary was $66,442. Hempstead average salary is 38 percent higher than USA average and median salary is 53 percent higher than USA median salary. From 2010 to 2011, the average salary of employees at this employer increased 0.9 percent, the median salary increased 1.8 percent.