Ambulance - Field Supervisor salary at Johnson County

The average ambulance - field supervisor salary at Johnson County was $76,469 , which is 20 percent higher than the average salary for this job in Iowa, and 20 percent higher than the national average for this job . Ambulance - Field Supervisor salaries at Johnson County typically range from $74,373 to $78,564 (25th to 75th percentile). The highest reported ambulance - field supervisor salary was $82,534. There are 4 employees at Johnson County with the job title ambulance - field supervisor.