Assistant Principal - High School salary at Millville City

The average assistant principal - high school salary at Millville City was $89,580 , which is 23 percent lower than the average salary for this job in New Jersey, and 13 percent lower than the national average for this job . Assistant Principal - High School salaries at Millville City typically range from $82,392 to $96,279 (25th to 75th percentile). The highest reported assistant principal - high school salary was $106,279. There are 10 employees at Millville City with the job title assistant principal - high school.