Fraud Investigator salary at San Mateo County

The average fraud investigator salary at San Mateo County was $97,609 , which is 21 percent lower than the average salary for this job in California, but 39 percent higher than the national average for this job . Fraud Investigator salaries at San Mateo County typically range from $40,236 to $154,069 (25th to 75th percentile). The highest reported fraud investigator salary was $157,726. There are 7 employees at San Mateo County with the job title fraud investigator.