ZIP 01867 recorded 165 fire and hazmat incidents in 2025, 890 across 2021–2025. Primary county: Middlesex County, MA. FEMA NRI rates wildfire risk here as High.
890 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 160 | |
| 2022 | 183 | |
| 2023 | 195 | |
| 2024 | 187 | |
| 2025 | 165 |
Jul peaks. Feb dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 01867 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Arcing, shorted electrical equipment | 91 | 10.2% | |
| 2 | Carbon monoxide incident | 82 | 9.2% | |
| 3 | Building fires | 79 | 8.9% | |
| 4 | Power line down | 79 | 8.9% | |
| 5 | Gas leak (natural gas or LPG) | 78 | 8.8% |
For the 23 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 01867 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Engine area, running gear, wheel area | 27 | 13.8% | |
| 2 | Highway, parking lot, street: on or near | 25 | 12.8% | |
| 3 | Cooking area, kitchen | 24 | 12.3% | |
| 4 | Outside area, other | 23 | 11.8% | |
| 5 | Open area - outside; included are farmland, field | 17 | 8.7% | |
| 6 | Wildland, woods | 14 | 7.2% | |
| 7 | Other | 8 | 4.1% | |
| 8 | Courtyard, patio, porch, terrace | 7 | 3.6% | |
| 9 | All other areas | 50 | 25.6% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 69 | 35.4% | |
| 2 | Arcing | 22 | 11.3% | |
| 3 | Radiated, conducted heat from operating equipment | 18 | 9.2% | |
| 4 | Heat from powered equipment, other | 17 | 8.7% | |
| 5 | Hot ember or ash | 10 | 5.1% | |
| 6 | Spark, ember or flame from operating equipment | 8 | 4.1% | |
| 7 | Cigarette | 7 | 3.6% | |
| 8 | Heat from direct flame, convection currents | 7 | 3.6% | |
| 9 | All other sources | 37 | 19.0% |
Largest single-incident losses in ZIP 01867 across 2021–2025. These 8 fires alone account for 239% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $3,000,000 | Building fires | 2021 | Major |
| 2 | $1,200,000 | Building fires | 2025 | Major |
| 3 | $400,000 | Building fires | 2025 | Major |
| 4 | $250,000 | Building fires | 2023 | Major |
| 5 | $200,000 | Building fires | 2022 | Significant |
| 6 | $150,000 | Building fires | 2025 | Significant |
| 7 | $125,000 | Building fires | 2022 | Significant |
| 8 | $100,000 | Building fires | 2022 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 01867.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Reading | 885 | |
| 2 | Wilmington | 3 | |
| 3 | Woburn | 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 — 890 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.