Highest salary at Rolla in year 2017 was $96,837. Number of employees at Rolla in year 2017 was 20. Average annual salary was $54,603 and median salary was $53,554. Rolla average salary is 17 percent higher than USA average and median salary is 23 percent higher than USA median salary. From 2016 to 2017, the average salary of employees at this employer increased 8.6 percent, the median salary increased 4.1 percent.