ZIP 01730 recorded 267 fire and hazmat incidents in 2025, 1,119 across 2021–2025. Primary county: Middlesex County, MA. FEMA NRI rates wildfire risk here as High.
1,119 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 168 | |
| 2022 | 231 | |
| 2023 | 223 | |
| 2024 | 230 | |
| 2025 | 267 |
Dec peaks. Jun dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 01730 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Power line down | 304 | 27.2% | |
| 2 | Gas leak (natural gas or LPG) | 158 | 14.1% | |
| 3 | Aircraft standby | 115 | 10.3% | |
| 4 | Gasoline or other flammable liquid spill | 97 | 8.7% | |
| 5 | Electrical wiring/equipment problem, other | 60 | 5.4% |
For the 1 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 01730 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Outside area, other | 29 | 29.0% | |
| 2 | Engine area, running gear, wheel area | 12 | 12.0% | |
| 3 | Wildland, woods | 9 | 9.0% | |
| 4 | Cooking area, kitchen | 7 | 7.0% | |
| 5 | Highway, parking lot, street: on or near | 7 | 7.0% | |
| 6 | Open area - outside; included are farmland, field | 6 | 6.0% | |
| 7 | Undetermined | 3 | 3.0% | |
| 8 | Other | 2 | 2.0% | |
| 9 | All other areas | 25 | 25.0% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 20 | 20.0% | |
| 2 | Cigarette | 14 | 14.0% | |
| 3 | Hot or smoldering object, other | 13 | 13.0% | |
| 4 | Chemical, natural heat source, other | 11 | 11.0% | |
| 5 | Hot ember or ash | 7 | 7.0% | |
| 6 | Radiated, conducted heat from operating equipment | 6 | 6.0% | |
| 7 | Heat source: other | 4 | 4.0% | |
| 8 | Heat from powered equipment, other | 4 | 4.0% | |
| 9 | All other sources | 21 | 21.0% |
Largest single-incident losses in ZIP 01730 across 2021–2025. These 8 fires alone account for 953% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $500,000 | Building fires | 2023 | Major |
| 2 | $300,000 | Building fires | 2024 | Major |
| 3 | $100,000 | Building fires | 2024 | Significant |
| 4 | $75,000 | Passenger vehicle fire | 2021 | Significant |
| 5 | $50,000 | Fires in structures other than in a building | 2022 | Significant |
| 6 | $50,000 | Building fires | 2023 | Significant |
| 7 | $50,000 | Building fires | 2025 | Significant |
| 8 | $30,000 | Passenger vehicle fire | 2025 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 01730.
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 — 1,119 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.