Office Assistant salary at Fontana

The average office assistant salary at Fontana was $50,367 , which is 10 percent lower than the average salary for this job in California, but 22 percent higher than the national average for this job . Office Assistant salaries at Fontana typically range from $18,562 to $66,455 (25th to 75th percentile). The highest reported office assistant salary was $92,498. There are 10 employees at Fontana with the job title office assistant.