ZIP 02474 recorded 237 fire and hazmat incidents in 2025, 1,676 across 2021–2025. Primary county: Middlesex County, MA. FEMA NRI rates wildfire risk here as High.
1,676 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 487 | |
| 2022 | 439 | |
| 2023 | 240 | |
| 2024 | 273 | |
| 2025 | 237 |
Jun peaks. Jan dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 02474 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Power line down | 642 | 38.3% | |
| 2 | Gas leak (natural gas or LPG) | 317 | 18.9% | |
| 3 | Electrical wiring/equipment problem, other | 113 | 6.7% | |
| 4 | Cooking fire, confined to container | 85 | 5.1% | |
| 5 | Carbon monoxide incident | 79 | 4.7% |
For the 4 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 02474 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Outside area, other | 43 | 33.9% | |
| 2 | Cooking area, kitchen | 10 | 7.9% | |
| 3 | Engine area, running gear, wheel area | 9 | 7.1% | |
| 4 | Wildland, woods | 7 | 5.5% | |
| 5 | Exterior balcony, unenclosed porch | 5 | 3.9% | |
| 6 | Exterior, exposed surface | 5 | 3.9% | |
| 7 | Highway, parking lot, street: on or near | 5 | 3.9% | |
| 8 | Bedroom - < 5 persons; included are jail or prison | 4 | 3.1% | |
| 9 | All other areas | 39 | 30.7% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 43 | 33.9% | |
| 2 | Hot or smoldering object, other | 13 | 10.2% | |
| 3 | Arcing | 12 | 9.4% | |
| 4 | Cigarette | 11 | 8.7% | |
| 5 | Hot ember or ash | 8 | 6.3% | |
| 6 | Heat from powered equipment, other | 7 | 5.5% | |
| 7 | Heat source: other | 5 | 3.9% | |
| 8 | Spark, ember or flame from operating equipment | 4 | 3.1% | |
| 9 | All other sources | 24 | 18.9% |
Largest single-incident losses in ZIP 02474 across 2021–2025. These 8 fires alone account for 445% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $1,000,000 | Building fires | 2023 | Major |
| 2 | $1,000,000 | Building fires | 2025 | Major |
| 3 | $600,000 | Building fires | 2021 | Major |
| 4 | $500,000 | Building fires | 2022 | Major |
| 5 | $500,000 | Building fires | 2024 | Major |
| 6 | $400,000 | Building fires | 2023 | Major |
| 7 | $300,000 | Building fires | 2022 | Major |
| 8 | $300,000 | Building fires | 2022 | Major |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 02474.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Arlington | 1,674 | |
| 2 | Somerville | 2 |
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 — 1,676 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.