ZIP 02451 recorded 17 fire and hazmat incidents in 2025, 886 across 2021–2025. Primary county: Middlesex County, MA. FEMA NRI rates wildfire risk here as High.
886 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 216 | |
| 2022 | 267 | |
| 2023 | 191 | |
| 2024 | 195 | |
| 2025 | 17 |
May peaks. Mar dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 02451 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Hazardous condition, other | 127 | 14.3% | |
| 2 | Electrical wiring/equipment problem, other | 100 | 11.3% | |
| 3 | Gas leak (natural gas or LPG) | 99 | 11.2% | |
| 4 | Natural vegetation fire, other | 69 | 7.8% | |
| 5 | Power line down | 57 | 6.4% |
For the 0 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 02451 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Outside area, other | 67 | 36.4% | |
| 2 | Engine area, running gear, wheel area | 21 | 11.4% | |
| 3 | Cooking area, kitchen | 16 | 8.7% | |
| 4 | Highway, parking lot, street: on or near | 14 | 7.6% | |
| 5 | Vehicle area, other | 12 | 6.5% | |
| 6 | Wildland, woods | 7 | 3.8% | |
| 7 | Open area - outside; included are farmland, field | 5 | 2.7% | |
| 8 | Undetermined | 4 | 2.2% | |
| 9 | All other areas | 38 | 20.7% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 95 | 51.6% | |
| 2 | Cigarette | 23 | 12.5% | |
| 3 | Heat from powered equipment, other | 20 | 10.9% | |
| 4 | Arcing | 7 | 3.8% | |
| 5 | Heat from direct flame, convection currents | 7 | 3.8% | |
| 6 | Heat source: other | 6 | 3.3% | |
| 7 | Heat, spark from friction | 5 | 2.7% | |
| 8 | Radiated, conducted heat from operating equipment | 4 | 2.2% | |
| 9 | All other sources | 17 | 9.2% |
Largest single-incident losses in ZIP 02451 across 2021–2025. These 8 fires alone account for 0% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $600,000 | Building fires | 2024 | Major |
| 2 | $500,000 | Building fires | 2022 | Major |
| 3 | $500,000 | Building fires | 2024 | Major |
| 4 | $100,000 | Building fires | 2022 | Significant |
| 5 | $100,000 | Building fires | 2022 | Significant |
| 6 | $50,000 | Building fires | 2022 | Significant |
| 7 | $50,000 | Building fires | 2022 | Significant |
| 8 | $30,000 | Building fires | 2024 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 02451.
The figures above are historical. For today's air quality, fire-weather warnings, and active fires, go to the official sources.
NFIRS reports each fire incident with a 5-digit address ZIP. We aggregate those rows directly to produce ZIP-level totals — 886 incidents in this ZIP across 2021–2025. Building-fire breakdowns (Area of Origin, Heat Source, ignition cause) only count fires investigators classified beyond the basic incident report. Because NFIRS reporting is voluntary, totals are a strong indicator rather than a complete census.