Highest salary at Island Park in year 2011 was $93,362. Number of employees at Island Park in year 2011 was 21. Average annual salary was $37,351 and median salary was $34,474. Island Park average salary is 20 percent lower than USA average and median salary is 21 percent lower than USA median salary. From 2010 to 2011, the average salary of employees at this employer increased 0.5 percent, the median salary increased 6.6 percent.