Highest salary at Town Of Groton in year 2017 was $69,732. Number of employees at Town Of Groton in year 2017 was 22. Average annual salary was $31,377 and median salary was $36,237. Town Of Groton average salary is 33 percent lower than USA average and median salary is 17 percent lower than USA median salary. From 2016 to 2017, the average salary of employees at this employer increased 8.7 percent, the median salary increased 9.5 percent.