Investigator - Prosecutor salary at Franklin County

The average investigator - prosecutor salary at Franklin County was $78,706 , which is 4 percent higher than the average salary for this job in Ohio, and 36 percent higher than the national average for this job . Investigator - Prosecutor salaries at Franklin County typically range from $16,294 to $147,263 (25th to 75th percentile). The highest reported investigator - prosecutor salary was $168,569. There are 9 employees at Franklin County with the job title investigator - prosecutor.