ZIP 91765 recorded 64 fire and hazmat incidents in 2025, 246 across 2021–2025. Primary county: Los Angeles County, CA. FEMA NRI rates wildfire risk here as Very High.
246 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 46 | |
| 2022 | 44 | |
| 2023 | 38 | |
| 2024 | 54 | |
| 2025 | 64 |
Aug peaks. Jun dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 91765 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Mobile property (vehicle) fire, other | 32 | 13.0% | |
| 2 | Passenger vehicle fire | 29 | 11.8% | |
| 3 | Building fires | 22 | 8.9% | |
| 4 | Outside rubbish fire, other | 18 | 7.3% | |
| 5 | Cooking fire, confined to container | 14 | 5.7% |
For the 4 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 91765 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Engine area, running gear, wheel area | 33 | 31.1% | |
| 2 | Vehicle area, other | 13 | 12.3% | |
| 3 | Undetermined | 9 | 8.5% | |
| 4 | Other | 8 | 7.5% | |
| 5 | Vehicle storage area; garage, carport | 6 | 5.7% | |
| 6 | Outside area, other | 4 | 3.8% | |
| 7 | Cooking area, kitchen | 3 | 2.8% | |
| 8 | Bathroom, checkroom, lavatory, locker room | 3 | 2.8% | |
| 9 | All other areas | 27 | 25.5% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Arcing | 24 | 22.6% | |
| 2 | Heat source: other | 23 | 21.7% | |
| 3 | Undetermined | 22 | 20.8% | |
| 4 | Heat from powered equipment, other | 11 | 10.4% | |
| 5 | Radiated, conducted heat from operating equipment | 9 | 8.5% | |
| 6 | Spark, ember or flame from operating equipment | 7 | 6.6% | |
| 7 | Hot or smoldering object, other | 5 | 4.7% | |
| 8 | Heat, spark from friction | 2 | 1.9% | |
| 9 | All other sources | 3 | 2.8% |
Largest single-incident losses in ZIP 91765 across 2021–2025. These 8 fires alone account for 852% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $750,000 | Building fires | 2023 | Major |
| 2 | $450,000 | Building fires | 2022 | Major |
| 3 | $300,000 | Building fires | 2024 | Major |
| 4 | $200,000 | Building fires | 2023 | Significant |
| 5 | $100,000 | Building fires | 2023 | Significant |
| 6 | $100,000 | Building fires | 2025 | Significant |
| 7 | $75,000 | Passenger vehicle fire | 2021 | Significant |
| 8 | $50,000 | Building fires | 2022 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 91765.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Diamond Bar | 206 | |
| 2 | Pomona | 32 |
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 — 246 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.