Highest salary at Hempstead in year 2012 was $235,907. Number of employees at Hempstead in year 2012 was 2,727. Average annual salary was $66,937 and median salary was $69,265. Hempstead average salary is 43 percent higher than USA average and median salary is 59 percent higher than USA median salary. From 2011 to 2012, the average salary of employees at this employer increased 3.4 percent, the median salary increased 4.3 percent.