ZIP 94541 recorded 326 fire and hazmat incidents in 2025, 1,321 across 2021–2025. Primary county: Alameda County, CA. FEMA NRI rates wildfire risk here as Very High.
1,321 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 75 | |
| 2022 | 250 | |
| 2023 | 334 | |
| 2024 | 336 | |
| 2025 | 326 |
Aug peaks. Nov dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 94541 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Outside rubbish fire, other | 263 | 19.9% | |
| 2 | Outside rubbish, trash or waste fire | 186 | 14.1% | |
| 3 | Power line down | 178 | 13.5% | |
| 4 | Gas leak (natural gas or LPG) | 105 | 7.9% | |
| 5 | Building fires | 72 | 5.5% |
For the 14 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 94541 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 125 | 44.6% | |
| 2 | Other | 20 | 7.1% | |
| 3 | Cooking area, kitchen | 17 | 6.1% | |
| 4 | Outside area, other | 17 | 6.1% | |
| 5 | Engine area, running gear, wheel area | 15 | 5.4% | |
| 6 | Bedroom - < 5 persons; included are jail or prison | 8 | 2.9% | |
| 7 | Common room, den, family room, living room, lounge | 7 | 2.5% | |
| 8 | Vehicle area, other | 7 | 2.5% | |
| 9 | All other areas | 64 | 22.9% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 193 | 68.9% | |
| 2 | Heat source: other | 31 | 11.1% | |
| 3 | Heat from powered equipment, other | 13 | 4.6% | |
| 4 | Hot or smoldering object, other | 13 | 4.6% | |
| 5 | Arcing | 9 | 3.2% | |
| 6 | Heat from other open flame or smoking materials | 4 | 1.4% | |
| 7 | Hot ember or ash | 2 | 0.7% | |
| 8 | Cigarette | 2 | 0.7% | |
| 9 | All other sources | 13 | 4.6% |
Largest single-incident losses in ZIP 94541 across 2021–2025. These 8 fires alone account for 183% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $1,000,000 | Building fires | 2022 | Major |
| 2 | $1,000,000 | Outside gas or vapor combustion explosion | 2025 | Major |
| 3 | $650,000 | Building fires | 2023 | Major |
| 4 | $500,000 | Building fires | 2022 | Major |
| 5 | $500,000 | Building fires | 2023 | Major |
| 6 | $500,000 | Building fires | 2025 | Major |
| 7 | $400,000 | Building fires | 2024 | Major |
| 8 | $300,000 | Fire, other | 2023 | Major |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 94541.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Hayward | 1,250 | |
| 2 | San Lorenzo | 14 | |
| 3 | San Leandro | 8 | |
| 4 | Castro Valley | 5 |
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 — 1,321 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.