Highest salary at Erwin in year 2011 was $109,472. Number of employees at Erwin in year 2011 was 22. Average annual salary was $50,272 and median salary was $50,893. Erwin average salary is 7 percent higher than USA average and median salary is 17 percent higher than USA median salary. From 2010 to 2011, the average salary of employees at this employer increased 11.5 percent, the median salary increased 6.2 percent.