ZIP 02121 recorded 203 fire and hazmat incidents in 2025, 1,374 across 2021–2025. Primary county: Suffolk County, MA.
1,374 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 325 | |
| 2022 | 347 | |
| 2023 | 262 | |
| 2024 | 237 | |
| 2025 | 203 |
Nov peaks. Jan dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 02121 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Cooking fire, confined to container | 484 | 35.2% | |
| 2 | Building fires | 114 | 8.3% | |
| 3 | Brush, or brush and grass mixture fire | 92 | 6.7% | |
| 4 | Carbon monoxide incident | 87 | 6.3% | |
| 5 | Gas leak (natural gas or LPG) | 79 | 5.7% |
For the 15 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 02121 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Outside area, other | 103 | 29.4% | |
| 2 | Engine area, running gear, wheel area | 28 | 8.0% | |
| 3 | Other | 25 | 7.1% | |
| 4 | Cooking area, kitchen | 18 | 5.1% | |
| 5 | Bedroom - < 5 persons; included are jail or prison | 17 | 4.9% | |
| 6 | Vehicle area, other | 16 | 4.6% | |
| 7 | Exterior balcony, unenclosed porch | 15 | 4.3% | |
| 8 | Wildland, woods | 15 | 4.3% | |
| 9 | All other areas | 113 | 32.3% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 129 | 36.9% | |
| 2 | Heat source: other | 45 | 12.9% | |
| 3 | Hot or smoldering object, other | 35 | 10.0% | |
| 4 | Cigarette | 26 | 7.4% | |
| 5 | Heat from powered equipment, other | 21 | 6.0% | |
| 6 | Hot ember or ash | 21 | 6.0% | |
| 7 | Arcing | 20 | 5.7% | |
| 8 | Radiated, conducted heat from operating equipment | 15 | 4.3% | |
| 9 | All other sources | 38 | 10.9% |
Largest single-incident losses in ZIP 02121 across 2021–2025. These 8 fires alone account for 507% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $1,000,000 | Building fires | 2023 | Major |
| 2 | $800,000 | Building fires | 2021 | Major |
| 3 | $800,000 | Building fires | 2021 | Major |
| 4 | $800,000 | Building fires | 2021 | Major |
| 5 | $700,000 | Building fires | 2023 | Major |
| 6 | $650,000 | Building fires | 2025 | Major |
| 7 | $600,000 | Building fires | 2024 | Major |
| 8 | $500,000 | Building fires | 2021 | Major |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 02121.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Boston | 1,373 | |
| 2 | Fall River | 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 — 1,374 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.