The average firefighter salary at Gilroy was $264,600 , which is 36 percent higher than the average salary for this job in California, and 160 percent higher than the national average for this job . Firefighter salaries at Gilroy typically range from $206,756 to $319,894 (25th to 75th percentile). The highest reported firefighter salary was $382,006. There are 18 employees at Gilroy with the job title firefighter.