Highest salary at Middleport in year 2014 was $63,424. Number of employees at Middleport in year 2014 was 18. Average annual salary was $29,049 and median salary was $29,278. Middleport average salary is 38 percent lower than USA average and median salary is 33 percent lower than USA median salary. From 2013 to 2014, the average salary of employees at this employer increased 2.6 percent.