ZIP 01801 recorded 288 fire and hazmat incidents in 2025, 1,579 across 2021–2025. Primary county: Middlesex County, MA. FEMA NRI rates wildfire risk here as High.
1,579 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 290 | |
| 2022 | 358 | |
| 2023 | 320 | |
| 2024 | 323 | |
| 2025 | 288 |
May peaks. Feb dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 01801 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Grass fire | 218 | 13.8% | |
| 2 | Cooking fire, confined to container | 189 | 12.0% | |
| 3 | Building fires | 184 | 11.7% | |
| 4 | Gas leak (natural gas or LPG) | 150 | 9.5% | |
| 5 | Power line down | 114 | 7.2% |
For the 22 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 01801 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Cooking area, kitchen | 116 | 17.5% | |
| 2 | Undetermined | 102 | 15.4% | |
| 3 | Outside area, other | 92 | 13.9% | |
| 4 | Engine area, running gear, wheel area | 45 | 6.8% | |
| 5 | Highway, parking lot, street: on or near | 42 | 6.3% | |
| 6 | Other | 39 | 5.9% | |
| 7 | Wildland, woods | 23 | 3.5% | |
| 8 | Open area - outside; included are farmland, field | 21 | 3.2% | |
| 9 | All other areas | 182 | 27.5% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 334 | 50.5% | |
| 2 | Heat source: other | 79 | 11.9% | |
| 3 | Heat from powered equipment, other | 68 | 10.3% | |
| 4 | Cigarette | 38 | 5.7% | |
| 5 | Arcing | 31 | 4.7% | |
| 6 | Radiated, conducted heat from operating equipment | 13 | 2.0% | |
| 7 | Cigarette lighter | 13 | 2.0% | |
| 8 | Hot or smoldering object, other | 11 | 1.7% | |
| 9 | All other sources | 75 | 11.3% |
Largest single-incident losses in ZIP 01801 across 2021–2025. These 8 fires alone account for 362% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $1,500,000 | Building fires | 2024 | Major |
| 2 | $1,000,000 | Mobile property (vehicle) fire, other | 2024 | Major |
| 3 | $900,000 | Building fires | 2023 | Major |
| 4 | $800,000 | Building fires | 2024 | Major |
| 5 | $800,000 | Building fires | 2024 | Major |
| 6 | $800,000 | Building fires | 2024 | Major |
| 7 | $700,000 | Building fires | 2024 | Major |
| 8 | $600,000 | Building fires | 2024 | Major |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 01801.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Woburn | 1,577 | |
| 2 | Boynton Beach | 1 | |
| 3 | Medford | 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 — 1,579 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.