Highest salary at Watertown in year 2014 was $122,769. Number of employees at Watertown in year 2014 was 435. Average annual salary was $43,451 and median salary was $46,097. Watertown average salary is 7 percent lower than USA average and median salary is 6 percent higher than USA median salary. From 2013 to 2014, the median salary increased 0.8 percent.