Highest salary at Rolla in year 2016 was $96,837. Number of employees at Rolla in year 2016 was 23. Average annual salary was $50,298 and median salary was $51,437. Rolla average salary is 7 percent higher than USA average and median salary is 18 percent higher than USA median salary. From 2015 to 2016, the median salary increased 0.5 percent.