Highest salary at Addison in year 2011 was $65,742. Number of employees at Addison in year 2011 was 18. Average annual salary was $31,604 and median salary was $36,205. Addison average salary is 33 percent lower than USA average and median salary is 17 percent lower than USA median salary. From 2010 to 2011, the average salary of employees at this employer increased 0.7 percent.