Office Assistant Senior salary at San Joaquin County

The average office assistant senior salary at San Joaquin County was $72,741 , which is 8 percent lower than the average salary for this job in California, but 14 percent higher than the national average for this job . Office Assistant Senior salaries at San Joaquin County typically range from $61,479 to $89,311 (25th to 75th percentile). The highest reported office assistant senior salary was $130,389. There are 526 employees at San Joaquin County with the job title office assistant senior.