Background Investigator salary at Baltimore County

The average background investigator salary at Baltimore County was $60,032 , which is 19 percent higher than the average salary for this job in Maryland, and 30 percent higher than the national average for this job . Background Investigator salaries at Baltimore County typically range from $10,941 to $88,437 (25th to 75th percentile). The highest reported background investigator salary was $88,437. There are 4 employees at Baltimore County with the job title background investigator.