Engineering Supervisor salary at Napa County

The average engineering supervisor salary at Napa County was $214,462 , which is 4 percent lower than the average salary for this job in California, but 89 percent higher than the national average for this job . Engineering Supervisor salaries at Napa County typically range from $201,501 to $223,729 (25th to 75th percentile). The highest reported engineering supervisor salary was $223,729. There are 3 employees at Napa County with the job title engineering supervisor.