Fraud Investigator salary at County of San Mateo

The average fraud investigator salary at County of San Mateo was $87,821 , which is 29 percent lower than the average salary for this job in California, but 25 percent higher than the national average for this job . Fraud Investigator salaries at County of San Mateo typically range from $69,468 to $106,174 (25th to 75th percentile). The highest reported fraud investigator salary was $109,271. There are 4 employees at County of San Mateo with the job title fraud investigator.