Highest salary at Erwin in year 2013 was $111,333. Number of employees at Erwin in year 2013 was 24. Average annual salary was $51,444 and median salary was $52,694. Erwin average salary is 10 percent higher than USA average and median salary is 21 percent higher than USA median salary. From 2012 to 2013, the average salary of employees at this employer increased 3.3 percent, the median salary increased 5.5 percent.