Highest salary at Essex in year 2012 was $180,671. Number of employees at Essex in year 2012 was 561. Average annual salary was $38,703 and median salary was $37,469. Essex average salary is 17 percent lower than USA average and median salary is 14 percent lower than USA median salary. From 2011 to 2012, the average salary of employees at this employer increased 6.5 percent, the median salary increased 4.0 percent.