Plant Maintenance Supervisor salary at Fairfax County

The average plant maintenance supervisor salary at Fairfax County was $103,114 , which is 13 percent higher than the average salary for this job in Virginia, and 55 percent higher than the national average for this job . Plant Maintenance Supervisor salaries at Fairfax County typically range from $93,842 to $113,381 (25th to 75th percentile). The highest reported plant maintenance supervisor salary was $113,381. There are 3 employees at Fairfax County with the job title plant maintenance supervisor.