County profile
Mercer County, NJ 18 departments
714 HIFLD personnel across 18 departments in Mercer County · #14 of 21 in-state.
Mercer County, NJ carries a heavy HIFLD roster (714 personnel across 18 departments) - #14 of 21 in-state; mix 3/10/0 career/volunteer/combination.
- Personnel rank #14 of 21 in New Jersey
- 2.94 stations per 100 personnel
- 25% of roster in Trenton Fire and Emergency Services Rescue 1
- 10 of 18 depts provide EMS
- 18 of 999 New Jersey departments statewide
Fire Departments in Mercer County
Coverage desk
Roster-weight lane (714 personnel) - station density and largest-book share from HIFLD.
Staffing mix: 3 career, 10 volunteer, 0 combination (56% volunteer).
2.94 stations per 100 HIFLD personnel (21 stations / 714 roster).
Largest book: Trenton Fire and Emergency Services Rescue 1 holds 25% of county personnel (180 of 714).
Photo-finish peer: Genesee County, NY (-1 personnel).
New Jersey roster context
- State departments
- 999
- Annual fires
- 51,500
- Volunteer %
- 54%
FAQ
How many firefighters serve Mercer County? ▼
Mercer County has 714 total fire department personnel across 18 departments. The average per department is 40, which is 11% above the New Jersey average.
How many fire departments are in Mercer County, NJ? ▼
Mercer County, NJ has 18 fire departments with available federal data. 3 career, 10 volunteer, By total reported personnel it ranks #14 of 21 among New Jersey counties with at least one listed department.
Are Mercer County fire departments mostly volunteer? ▼
Yes, 10 of 18 departments (56%) in Mercer County are volunteer.
Does Mercer County have EMS coverage? ▼
Yes - 21 departments in Mercer County provide EMS services.
Nationwide counties with similar fire coverage
Source: U.S. Fire Administration, National Fire Department Registry NFDR (National Fire Department Registry) · 2024 Personnel totals for Mercer County sum HIFLD roster fields (career + volunteer) where reported.