Administrative Services Assistant salary at Central Contra Costa Sanitary District (Contra Costa)

The average administrative services assistant salary at Central Contra Costa Sanitary District (Contra Costa) was $148,288 , which is 78 percent higher than the average salary for this job in California, and 154 percent higher than the national average for this job . Administrative Services Assistant salaries at Central Contra Costa Sanitary District (Contra Costa) typically range from $135,885 to $170,479 (25th to 75th percentile). The highest reported administrative services assistant salary was $197,664. There are 6 employees at Central Contra Costa Sanitary District (Contra Costa) with the job title administrative services assistant.