Investigator - Sheriff's Office salary at County Of Middlesex

The average investigator - sheriff's office salary at County Of Middlesex was $70,848 , which is 6 percent higher than the average salary for this job in New Jersey, but 24 percent lower than the national average for this job . Investigator - Sheriff's Office salaries at County Of Middlesex typically range from $44,626 to $106,143 (25th to 75th percentile). The highest reported investigator - sheriff's office salary was $132,555. There are 32 employees at County Of Middlesex with the job title investigator - sheriff's office.