ZIP 08520 recorded 198 fire and hazmat incidents in 2025, 1,026 across 2021–2025. Primary county: Mercer County, NJ. FEMA NRI rates wildfire risk here as High.
1,026 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 145 | |
| 2022 | 245 | |
| 2023 | 212 | |
| 2024 | 226 | |
| 2025 | 198 |
Mar peaks. Sep dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 08520 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 221 | 21.5% | |
| 2 | Building fires | 201 | 19.6% | |
| 3 | Passenger vehicle fire | 81 | 7.9% | |
| 4 | Cooking fire, confined to container | 67 | 6.5% | |
| 5 | Arcing, shorted electrical equipment | 55 | 5.4% |
For the 58 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 08520 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 35 | 21.0% | |
| 2 | Engine area, running gear, wheel area | 32 | 19.2% | |
| 3 | Outside area, other | 25 | 15.0% | |
| 4 | Highway, parking lot, street: on or near | 16 | 9.6% | |
| 5 | Cooking area, kitchen | 13 | 7.8% | |
| 6 | Courtyard, patio, porch, terrace | 7 | 4.2% | |
| 7 | Open area - outside; included are farmland, field | 6 | 3.6% | |
| 8 | Other | 5 | 3.0% | |
| 9 | All other areas | 28 | 16.8% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 109 | 65.3% | |
| 2 | Arcing | 11 | 6.6% | |
| 3 | Heat source: other | 8 | 4.8% | |
| 4 | Heat from powered equipment, other | 6 | 3.6% | |
| 5 | Hot ember or ash | 6 | 3.6% | |
| 6 | Radiated, conducted heat from operating equipment | 5 | 3.0% | |
| 7 | Match | 5 | 3.0% | |
| 8 | Spark, ember or flame from operating equipment | 3 | 1.8% | |
| 9 | All other sources | 14 | 8.4% |
Largest single-incident losses in ZIP 08520 across 2021–2025. These 8 fires alone account for 196% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $300,000 | Building fires | 2023 | Major |
| 2 | $226,800 | Building fires | 2025 | Significant |
| 3 | $200,000 | Building fires | 2024 | Significant |
| 4 | $70,000 | Road freight or transport vehicle fire | 2023 | Significant |
| 5 | $50,000 | Fires in structures other than in a building | 2023 | Significant |
| 6 | $50,000 | Road freight or transport vehicle fire | 2025 | Significant |
| 7 | $50,000 | Building fires | 2025 | Significant |
| 8 | $50,000 | Building fires | 2025 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 08520.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | East Windsor | 590 | |
| 2 | Hightstown | 209 | |
| 3 | Robbinsville | 53 | |
| 4 | Cranbury | 1 | |
| 5 | Ewing | 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 — 1,026 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.