Site Supervisor II - Project salary at Contra Costa County

The average site supervisor ii - project salary at Contra Costa County was $83,613 , which is 8 percent lower than the average salary for this job in California, and 8 percent lower than the national average for this job . Site Supervisor II - Project salaries at Contra Costa County typically range from $58,279 to $115,821 (25th to 75th percentile). The highest reported site supervisor ii - project salary was $130,225. There are 9 employees at Contra Costa County with the job title site supervisor ii - project.