Facility Maintenance Supervisor salary at Ada County

The average facility maintenance supervisor salary at Ada County was $72,447 , which is 9 percent higher than the average salary for this job in Idaho, and 14 percent higher than the national average for this job . Facility Maintenance Supervisor salaries at Ada County typically range from $67,413 to $80,725 (25th to 75th percentile). The highest reported facility maintenance supervisor salary was $81,016. There are 7 employees at Ada County with the job title facility maintenance supervisor.