Office Assistant Senior salary at San Joaquin County

The average office assistant senior salary at San Joaquin County was $69,654 , which is 5 percent lower than the average salary for this job in California, but 95 percent higher than the national average for this job . Office Assistant Senior salaries at San Joaquin County typically range from $57,499 to $87,229 (25th to 75th percentile). The highest reported office assistant senior salary was $132,682. There are 520 employees at San Joaquin County with the job title office assistant senior.