Internal Security Investigator salary at Illinois Department of Human Services

The average internal security investigator salary at Illinois Department of Human Services was $85,734 , which is 5 percent lower than the average salary for this job in Illinois, and 5 percent lower than the national average for this job . Internal Security Investigator salaries at Illinois Department of Human Services typically range from $68,022 to $112,053 (25th to 75th percentile). The highest reported internal security investigator salary was $169,850. There are 76 employees at Illinois Department of Human Services with the job title internal security investigator.