Highest salary at Island Park in year 2010 was $91,040. Number of employees at Island Park in year 2010 was 21. Average annual salary was $37,155 and median salary was $32,334. Island Park average salary is 21 percent lower than USA average and median salary is 26 percent lower than USA median salary. From 2009 to 2010, the average salary of employees at this employer increased 1.3 percent, the median salary increased 2.2 percent.