ZIP 01450 recorded 109 fire and hazmat incidents in 2025, 660 across 2021–2025. Primary county: Middlesex County, MA. FEMA NRI rates wildfire risk here as High.
660 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 109 | |
| 2022 | 141 | |
| 2023 | 132 | |
| 2024 | 169 | |
| 2025 | 109 |
Apr peaks. May dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 01450 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 94 | 14.2% | |
| 2 | Unauthorized burning | 79 | 12.0% | |
| 3 | Building fires | 78 | 11.8% | |
| 4 | Carbon monoxide incident | 52 | 7.9% | |
| 5 | Brush, or brush and grass mixture fire | 51 | 7.7% |
For the 11 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 01450 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Open area - outside; included are farmland, field | 19 | 15.6% | |
| 2 | Wildland, woods | 18 | 14.8% | |
| 3 | Outside area, other | 14 | 11.5% | |
| 4 | Engine area, running gear, wheel area | 8 | 6.6% | |
| 5 | Cooking area, kitchen | 7 | 5.7% | |
| 6 | Machinery room or area; elevator machinery room | 6 | 4.9% | |
| 7 | Undetermined | 6 | 4.9% | |
| 8 | Vehicle storage area; garage, carport | 5 | 4.1% | |
| 9 | All other areas | 39 | 32.0% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 30 | 24.6% | |
| 2 | Heat from powered equipment, other | 19 | 15.6% | |
| 3 | Hot ember or ash | 14 | 11.5% | |
| 4 | Arcing | 11 | 9.0% | |
| 5 | Hot or smoldering object, other | 10 | 8.2% | |
| 6 | Radiated, conducted heat from operating equipment | 9 | 7.4% | |
| 7 | Heat spread from another fire, other | 4 | 3.3% | |
| 8 | Cigarette | 3 | 2.5% | |
| 9 | All other sources | 22 | 18.0% |
Largest single-incident losses in ZIP 01450 across 2021–2025. These 8 fires alone account for 200% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $1,200,000 | Building fires | 2025 | Major |
| 2 | $1,000,000 | Building fires | 2024 | Major |
| 3 | $600,000 | Building fires | 2025 | Major |
| 4 | $300,000 | Building fires | 2024 | Major |
| 5 | $200,000 | Building fires | 2022 | Significant |
| 6 | $200,000 | Building fires | 2023 | Significant |
| 7 | $100,000 | Building fires | 2023 | Significant |
| 8 | $100,000 | Off-road vehicle or heavy equipment fire | 2024 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 01450.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Groton | 656 | |
| 2 | Berlin | 1 | |
| 3 | Northborough | 1 | |
| 4 | Pepperell | 1 | |
| 5 | Saugus | 1 |
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 — 660 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.