ZIP 02139 recorded 683 fire and hazmat incidents in 2025, 4,024 across 2021–2025. Primary county: Middlesex County, MA. FEMA NRI rates wildfire risk here as High.
4,024 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 851 | |
| 2022 | 851 | |
| 2023 | 802 | |
| 2024 | 837 | |
| 2025 | 683 |
Oct peaks. Feb dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 02139 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Cooking fire, confined to container | 1,554 | 38.6% | |
| 2 | Biological hazard, confirmed or suspected | 778 | 19.3% | |
| 3 | Gas leak (natural gas or LPG) | 328 | 8.2% | |
| 4 | Electrical wiring/equipment problem, other | 186 | 4.6% | |
| 5 | Power line down | 144 | 3.6% |
For the 12 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 02139 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Cooking area, kitchen | 38 | 25.7% | |
| 2 | Outside area, other | 11 | 7.4% | |
| 3 | Bedroom - < 5 persons; included are jail or prison | 8 | 5.4% | |
| 4 | Engine area, running gear, wheel area | 8 | 5.4% | |
| 5 | Courtyard, patio, porch, terrace | 8 | 5.4% | |
| 6 | Exterior balcony, unenclosed porch | 7 | 4.7% | |
| 7 | Bathroom, checkroom, lavatory, locker room | 6 | 4.1% | |
| 8 | Equipment or service area, other | 5 | 3.4% | |
| 9 | All other areas | 57 | 38.5% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 47 | 31.8% | |
| 2 | Heat from powered equipment, other | 42 | 28.4% | |
| 3 | Cigarette | 12 | 8.1% | |
| 4 | Heat from direct flame, convection currents | 11 | 7.4% | |
| 5 | Heat source: other | 8 | 5.4% | |
| 6 | Hot or smoldering object, other | 7 | 4.7% | |
| 7 | Arcing | 4 | 2.7% | |
| 8 | Heat from other open flame or smoking materials | 4 | 2.7% | |
| 9 | All other sources | 13 | 8.8% |
Largest single-incident losses in ZIP 02139 across 2021–2025. These 8 fires alone account for 0% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $10,000 | Passenger vehicle fire | 2021 | Significant |
| 2 | $9,000 | Passenger vehicle fire | 2023 | Significant |
| 3 | $8,000 | Road freight or transport vehicle fire | 2021 | Significant |
| 4 | $5,000 | Building fires | 2022 | Significant |
| 5 | $5,000 | Building fires | 2022 | Significant |
| 6 | $2,500 | Building fires | 2022 | Significant |
| 7 | $1,000 | Outside equipment fire | 2021 | Significant |
| 8 | $1,000 | Building fires | 2021 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 02139.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Cambridge | 4,019 | |
| 2 | Somerville | 5 |
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 — 4,024 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.