Office Assistant salary at Napa County

The average office assistant salary at Napa County was $70,599 , which is 13 percent higher than the average salary for this job in California, and 43 percent higher than the national average for this job . Office Assistant salaries at Napa County typically range from $28,605 to $106,919 (25th to 75th percentile). The highest reported office assistant salary was $119,297. There are 55 employees at Napa County with the job title office assistant.