Highest salary at Northampton in year 2014 was $65,966. Number of employees at Northampton in year 2014 was 15. Average annual salary was $23,785 and median salary was $22,000. Northampton average salary is 49 percent lower than USA average and median salary is 49 percent lower than USA median salary. From 2013 to 2014, the median salary increased 3.7 percent.