Senior Internal Auditor salary at San Mateo County

The average senior internal auditor salary at San Mateo County was $123,707 , which is 13 percent lower than the average salary for this job in California, but 43 percent higher than the national average for this job . Senior Internal Auditor salaries at San Mateo County typically range from $66,236 to $181,178 (25th to 75th percentile). The highest reported senior internal auditor salary was $225,965. There are 4 employees at San Mateo County with the job title senior internal auditor.