Administrative Intern salary at Ontario

The average administrative intern salary at Ontario was $19,498 , which is 322 percent higher than the average salary for this job in California, but 72 percent lower than the national average for this job . Administrative Intern salaries at Ontario typically range from $16,198 to $22,847 (25th to 75th percentile). The highest reported administrative intern salary was $29,335. There are 34 employees at Ontario with the job title administrative intern.