Background Investigator salary at Multnomah County

The average background investigator salary at Multnomah County was $85,067 , which is 58 percent higher than the average salary for this job in Oregon, and 84 percent higher than the national average for this job . Background Investigator salaries at Multnomah County typically range from $80,067 to $90,118 (25th to 75th percentile). The highest reported background investigator salary was $97,340. There are 8 employees at Multnomah County with the job title background investigator.