Engineering Supervisor salary at Napa County

The average engineering supervisor salary at Napa County was $233,632 , which is 5 percent lower than the average salary for this job in California, but 88 percent higher than the national average for this job . Engineering Supervisor salaries at Napa County typically range from $217,692 to $252,908 (25th to 75th percentile). The highest reported engineering supervisor salary was $252,907. There are 3 employees at Napa County with the job title engineering supervisor.