ZIP 91733 recorded 137 fire and hazmat incidents in 2025, 763 across 2021–2025. Primary county: Los Angeles County, CA. FEMA NRI rates wildfire risk here as Very High.
763 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 183 | |
| 2022 | 139 | |
| 2023 | 158 | |
| 2024 | 146 | |
| 2025 | 137 |
Jul peaks. Jan dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 91733 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Trash or rubbish fire, contained | 230 | 30.1% | |
| 2 | Outside rubbish fire, other | 68 | 8.9% | |
| 3 | Electrical wiring/equipment problem, other | 63 | 8.3% | |
| 4 | Power line down | 62 | 8.1% | |
| 5 | Building fires | 38 | 5.0% |
For the 10 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 91733 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 35 | 26.1% | |
| 2 | Other | 14 | 10.4% | |
| 3 | Vehicle area, other | 12 | 9.0% | |
| 4 | Engine area, running gear, wheel area | 12 | 9.0% | |
| 5 | Outside area, other | 10 | 7.5% | |
| 6 | Cooking area, kitchen | 6 | 4.5% | |
| 7 | Bedroom - < 5 persons; included are jail or prison | 5 | 3.7% | |
| 8 | Storage area, other | 5 | 3.7% | |
| 9 | All other areas | 35 | 26.1% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 53 | 39.6% | |
| 2 | Heat from powered equipment, other | 20 | 14.9% | |
| 3 | Heat source: other | 17 | 12.7% | |
| 4 | Arcing | 14 | 10.4% | |
| 5 | Hot or smoldering object, other | 10 | 7.5% | |
| 6 | Spark, ember or flame from operating equipment | 4 | 3.0% | |
| 7 | Heat from other open flame or smoking materials | 3 | 2.2% | |
| 8 | Radiated, conducted heat from operating equipment | 2 | 1.5% | |
| 9 | All other sources | 11 | 8.2% |
Largest single-incident losses in ZIP 91733 across 2021–2025. These 8 fires alone account for 288% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $2,000,000 | Building fires | 2025 | Major |
| 2 | $1,900,000 | Building fires | 2024 | Major |
| 3 | $1,500,000 | Building fires | 2024 | Major |
| 4 | $1,000,000 | Building fires | 2021 | Major |
| 5 | $1,000,000 | Building fires | 2022 | Major |
| 6 | $900,000 | Building fires | 2025 | Major |
| 7 | $250,000 | Building fires | 2023 | Major |
| 8 | $250,000 | Building fires | 2023 | Major |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 91733.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | South El Monte | 443 | |
| 2 | El Monte | 202 | |
| 3 | Whittier | 93 | |
| 4 | Rosemead | 9 |
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 — 763 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.