ZIP 94546 recorded 150 fire and hazmat incidents in 2025, 727 across 2021–2025. Primary county: Alameda County, CA. FEMA NRI rates wildfire risk here as Very High.
727 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 122 | |
| 2022 | 137 | |
| 2023 | 133 | |
| 2024 | 185 | |
| 2025 | 150 |
Jul peaks. Apr dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 94546 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Power line down | 146 | 20.1% | |
| 2 | Outside rubbish, trash or waste fire | 79 | 10.9% | |
| 3 | Gas leak (natural gas or LPG) | 76 | 10.5% | |
| 4 | Trash or rubbish fire, contained | 59 | 8.1% | |
| 5 | Passenger vehicle fire | 58 | 8.0% |
For the 10 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 94546 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Engine area, running gear, wheel area | 30 | 22.1% | |
| 2 | Vehicle area, other | 15 | 11.0% | |
| 3 | Undetermined | 15 | 11.0% | |
| 4 | Cooking area, kitchen | 12 | 8.8% | |
| 5 | Outside area, other | 8 | 5.9% | |
| 6 | Cargo/trunk area - all vehicles | 6 | 4.4% | |
| 7 | Bedroom - < 5 persons; included are jail or prison | 4 | 2.9% | |
| 8 | Exterior balcony, unenclosed porch | 4 | 2.9% | |
| 9 | All other areas | 42 | 30.9% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 49 | 36.0% | |
| 2 | Heat from powered equipment, other | 19 | 14.0% | |
| 3 | Arcing | 17 | 12.5% | |
| 4 | Heat source: other | 12 | 8.8% | |
| 5 | Hot or smoldering object, other | 9 | 6.6% | |
| 6 | Radiated, conducted heat from operating equipment | 8 | 5.9% | |
| 7 | Spark, ember or flame from operating equipment | 6 | 4.4% | |
| 8 | Hot ember or ash | 3 | 2.2% | |
| 9 | All other sources | 13 | 9.6% |
Largest single-incident losses in ZIP 94546 across 2021–2025. These 8 fires alone account for 296% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $2,000,000 | Building fires | 2024 | Major |
| 2 | $500,000 | Building fires | 2024 | Major |
| 3 | $500,000 | Building fires | 2025 | Major |
| 4 | $350,000 | Building fires | 2022 | Major |
| 5 | $250,000 | Building fires | 2025 | Major |
| 6 | $150,000 | Building fires | 2023 | Significant |
| 7 | $150,000 | Building fires | 2023 | Significant |
| 8 | $125,000 | Building fires | 2024 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 94546.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Castro Valley | 692 | |
| 2 | Hayward | 15 | |
| 3 | San Leandro | 9 | |
| 4 | Oakland | 5 | |
| 5 | Orinda | 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 — 727 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.