Highest salary at Andover in year 2018 was $162,982. Number of employees at Andover in year 2018 was 379. Average annual salary was $58,434 and median salary was $57,813. Andover average salary is 25 percent higher than USA average and median salary is 33 percent higher than USA median salary. From 2017 to 2018, the average salary of employees at this employer increased 3.9 percent, the median salary increased 4.6 percent.