Data disclaimer: Based on the NFIRS Public Data Release (2021–2025). NFIRS is voluntarily reported and may not include all departments or incidents. Some departments have missing years or incomplete records. Totals shown reflect data as submitted and may not represent complete activity.
Incident Composition (2021–2025)
5-Year Trends
Total Incidents
By Incident Type
Key Metrics
114,939
Avg Incidents / Year
44.8%
EMS Share
3.8%
Fire Share
20.2%
False Alarm Rate
+1.9%
5-Year Trend
5
Departments
Departments
| Department ▲ | 5-Year Incidents ▼ | Fire % ▲ | EMS % ▲ | False Alarm % ▲ | Trend ▲ |
|---|---|---|---|---|---|
| Boston | 437,710 | 4.2% | 36.9% | 23% | +2.2% |
| Revere | 56,681 | 2.8% | 68.7% | 12.8% | -5.9% |
| Chelsea | 42,500 | 2.8% | 68.4% | 12.1% | -10% |
| Logan Airport FD | 22,014 | 1% | 79% | 6.6% | +63.5% |
| Winthrop | 15,789 | 2.4% | 67.2% | 9.7% | -1.4% |
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