Administrative Aide-Project salary at Contra Costa County

The average administrative aide-project salary at Contra Costa County was $87,782 , which is 37 percent higher than the average salary for this job in California, and 37 percent higher than the national average for this job . Administrative Aide-Project salaries at Contra Costa County typically range from $73,000 to $102,564 (25th to 75th percentile). The highest reported administrative aide-project salary was $105,636. There are 4 employees at Contra Costa County with the job title administrative aide-project.