ZIP 01852 recorded 288 fire and hazmat incidents in 2025, 1,489 across 2021–2025. Primary county: Middlesex County, MA. FEMA NRI rates wildfire risk here as High.
1,489 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 329 | |
| 2022 | 306 | |
| 2023 | 241 | |
| 2024 | 325 | |
| 2025 | 288 |
Apr peaks. Feb dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 01852 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 191 | 12.8% | |
| 2 | Unauthorized burning | 135 | 9.1% | |
| 3 | Cooking fire, confined to container | 133 | 8.9% | |
| 4 | Carbon monoxide incident | 131 | 8.8% | |
| 5 | Power line down | 116 | 7.8% |
For the 8 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 01852 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Engine area, running gear, wheel area | 35 | 17.5% | |
| 2 | Cooking area, kitchen | 20 | 10.0% | |
| 3 | Undetermined | 18 | 9.0% | |
| 4 | Outside area, other | 15 | 7.5% | |
| 5 | Highway, parking lot, street: on or near | 10 | 5.0% | |
| 6 | Bedroom - < 5 persons; included are jail or prison | 9 | 4.5% | |
| 7 | Wall surface: exterior | 9 | 4.5% | |
| 8 | Common room, den, family room, living room, lounge | 8 | 4.0% | |
| 9 | All other areas | 76 | 38.0% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 59 | 29.5% | |
| 2 | Arcing | 29 | 14.5% | |
| 3 | Heat from powered equipment, other | 24 | 12.0% | |
| 4 | Cigarette | 16 | 8.0% | |
| 5 | Radiated, conducted heat from operating equipment | 14 | 7.0% | |
| 6 | Hot or smoldering object, other | 10 | 5.0% | |
| 7 | Cigarette lighter | 10 | 5.0% | |
| 8 | Spark, ember or flame from operating equipment | 6 | 3.0% | |
| 9 | All other sources | 32 | 16.0% |
Largest single-incident losses in ZIP 01852 across 2021–2025. These 8 fires alone account for 643% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $200,000 | Building fires | 2021 | Significant |
| 2 | $100,000 | Building fires | 2021 | Significant |
| 3 | $100,000 | Building fires | 2022 | Significant |
| 4 | $100,000 | Building fires | 2022 | Significant |
| 5 | $75,000 | Building fires | 2021 | Significant |
| 6 | $75,000 | Building fires | 2024 | Significant |
| 7 | $50,000 | Building fires | 2021 | Significant |
| 8 | $50,000 | Building fires | 2021 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 01852.
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 — 1,489 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.