The average fire/emt salary at Northfield was $15,731 , which is 832 percent higher than the average salary for this job in Ohio, and 265 percent higher than the national average for this job . Fire/Emt salaries at Northfield typically range from $12,068 to $19,060 (25th to 75th percentile). The highest reported fire/emt salary was $26,385. There are 25 employees at Northfield with the job title fire/emt.