The average police salary at Town of Dover was $140,949 , which is 23 percent higher than the average salary for this job in Massachusetts, and 67 percent higher than the national average for this job . Police salaries at Town of Dover typically range from $128,784 to $158,331 (25th to 75th percentile). The highest reported police salary was $212,709. There are 13 employees at Town of Dover with the job title police.