ZIP 01520 recorded 108 fire and hazmat incidents in 2025, 520 across 2021–2025. Primary county: Worcester County, MA. FEMA NRI rates wildfire risk here as High.
520 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 69 | |
| 2022 | 93 | |
| 2023 | 106 | |
| 2024 | 144 | |
| 2025 | 108 |
Oct peaks. May dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 01520 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 70 | 13.5% | |
| 2 | Carbon monoxide incident | 68 | 13.1% | |
| 3 | Brush, or brush and grass mixture fire | 53 | 10.2% | |
| 4 | Forest, woods or wildland fire | 51 | 9.8% | |
| 5 | Gas leak (natural gas or LPG) | 33 | 6.3% |
For the 14 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 01520 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Other | 9 | 13.2% | |
| 2 | Engine area, running gear, wheel area | 9 | 13.2% | |
| 3 | Undetermined | 7 | 10.3% | |
| 4 | Cooking area, kitchen | 6 | 8.8% | |
| 5 | Courtyard, patio, porch, terrace | 4 | 5.9% | |
| 6 | Cargo/trunk area - all vehicles | 3 | 4.4% | |
| 7 | Wildland, woods | 3 | 4.4% | |
| 8 | Bathroom, checkroom, lavatory, locker room | 2 | 2.9% | |
| 9 | All other areas | 25 | 36.8% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 28 | 41.2% | |
| 2 | Arcing | 7 | 10.3% | |
| 3 | Hot or smoldering object, other | 6 | 8.8% | |
| 4 | Heat source: other | 5 | 7.4% | |
| 5 | Hot ember or ash | 5 | 7.4% | |
| 6 | Radiated, conducted heat from operating equipment | 4 | 5.9% | |
| 7 | Heat from other open flame or smoking materials | 3 | 4.4% | |
| 8 | Spark, ember or flame from operating equipment | 2 | 2.9% | |
| 9 | All other sources | 8 | 11.8% |
Largest single-incident losses in ZIP 01520 across 2021–2025. These 8 fires alone account for 380% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $600,000 | Building fires | 2023 | Major |
| 2 | $450,000 | Building fires | 2021 | Major |
| 3 | $250,000 | Building fires | 2023 | Major |
| 4 | $250,000 | Building fires | 2023 | Major |
| 5 | $250,000 | Building fires | 2025 | Major |
| 6 | $200,000 | Building fires | 2021 | Significant |
| 7 | $200,000 | Building fires | 2022 | Significant |
| 8 | $200,000 | Building fires | 2022 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 01520.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Holden | 518 |
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 — 520 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.