ZIP 01841 recorded 209 fire and hazmat incidents in 2025, 1,559 across 2021–2025. Primary county: Essex County, MA. FEMA NRI rates wildfire risk here as Moderate.
1,559 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 433 | |
| 2022 | 348 | |
| 2023 | 340 | |
| 2024 | 229 | |
| 2025 | 209 |
Nov peaks. Jun dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 01841 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 690 | 44.3% | |
| 2 | Building fires | 110 | 7.1% | |
| 3 | Carbon monoxide incident | 110 | 7.1% | |
| 4 | Hazardous condition, other | 84 | 5.4% | |
| 5 | Electrical wiring/equipment problem, other | 66 | 4.2% |
For the 20 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 01841 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 66 | 30.1% | |
| 2 | Engine area, running gear, wheel area | 23 | 10.5% | |
| 3 | Cooking area, kitchen | 21 | 9.6% | |
| 4 | Outside area, other | 17 | 7.8% | |
| 5 | Vehicle area, other | 9 | 4.1% | |
| 6 | Open area - outside; included are farmland, field | 8 | 3.7% | |
| 7 | Bedroom - < 5 persons; included are jail or prison | 7 | 3.2% | |
| 8 | Wildland, woods | 6 | 2.7% | |
| 9 | All other areas | 62 | 28.3% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 141 | 64.4% | |
| 2 | Arcing | 16 | 7.3% | |
| 3 | Hot or smoldering object, other | 10 | 4.6% | |
| 4 | Cigarette | 8 | 3.7% | |
| 5 | Heat source: other | 7 | 3.2% | |
| 6 | Heat from powered equipment, other | 7 | 3.2% | |
| 7 | Spark, ember or flame from operating equipment | 6 | 2.7% | |
| 8 | Cigarette lighter | 6 | 2.7% | |
| 9 | All other sources | 18 | 8.2% |
Largest single-incident losses in ZIP 01841 across 2021–2025. These 8 fires alone account for 241% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $1,000,000 | Building fires | 2021 | Major |
| 2 | $879,000 | Building fires | 2021 | Major |
| 3 | $700,200 | Building fires | 2025 | Major |
| 4 | $500,000 | Building fires | 2022 | Major |
| 5 | $500,000 | Building fires | 2022 | Major |
| 6 | $500,000 | Building fires | 2025 | Major |
| 7 | $400,000 | Building fires | 2022 | Major |
| 8 | $400,000 | Building fires | 2025 | Major |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 01841.
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 — 1,559 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.