The average attorney salary at Napa County was $207,705 , which is 10 percent higher than the average salary for this job in California, and 26 percent higher than the national average for this job . Attorney salaries at Napa County typically range from $155,804 to $291,154 (25th to 75th percentile). The highest reported attorney salary was $312,860. There are 40 employees at Napa County with the job title attorney.