Highest salary at Porter in year 2011 was $66,570. Number of employees at Porter in year 2011 was 19. Average annual salary was $33,420 and median salary was $33,483. Porter average salary is 29 percent lower than USA average and median salary is 23 percent lower than USA median salary. From 2010 to 2011, the average salary of employees at this employer increased 17.3 percent, the median salary increased 10.8 percent.