Office Assistant salary at San Mateo-Foster City

The average office assistant salary at San Mateo-Foster City was $57,200 , which is 2 percent higher than the average salary for this job in California, and 38 percent higher than the national average for this job . Office Assistant salaries at San Mateo-Foster City typically range from $22,833 to $101,802 (25th to 75th percentile). The highest reported office assistant salary was $101,802. There are 3 employees at San Mateo-Foster City with the job title office assistant.