Highest salary at Town Of Groton in year 2016 was $70,884. Number of employees at Town Of Groton in year 2016 was 24. Average annual salary was $28,854 and median salary was $33,102. Town Of Groton average salary is 38 percent lower than USA average and median salary is 24 percent lower than USA median salary. From 2015 to 2016, the average salary of employees at this employer increased 11.4 percent, the median salary increased 30.3 percent.