ZIP 94577 recorded 477 fire and hazmat incidents in 2025, 1,860 across 2021–2025. Primary county: Alameda County, CA. FEMA NRI rates wildfire risk here as Very High.
1,860 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 289 | |
| 2022 | 298 | |
| 2023 | 359 | |
| 2024 | 437 | |
| 2025 | 477 |
Oct peaks. Apr dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 94577 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Outside rubbish, trash or waste fire | 576 | 31.0% | |
| 2 | Power line down | 282 | 15.2% | |
| 3 | Trash or rubbish fire, contained | 249 | 13.4% | |
| 4 | Gas leak (natural gas or LPG) | 123 | 6.6% | |
| 5 | Passenger vehicle fire | 99 | 5.3% |
For the 16 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 94577 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 57 | 21.6% | |
| 2 | Engine area, running gear, wheel area | 25 | 9.5% | |
| 3 | Cooking area, kitchen | 16 | 6.1% | |
| 4 | Vehicle area, other | 15 | 5.7% | |
| 5 | Vehicle storage area; garage, carport | 11 | 4.2% | |
| 6 | Equipment or service area, other | 11 | 4.2% | |
| 7 | Operator/passenger area of transportation equip. | 11 | 4.2% | |
| 8 | Cargo/trunk area - all vehicles | 11 | 4.2% | |
| 9 | All other areas | 107 | 40.5% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 112 | 42.4% | |
| 2 | Heat source: other | 34 | 12.9% | |
| 3 | Heat from powered equipment, other | 24 | 9.1% | |
| 4 | Arcing | 21 | 8.0% | |
| 5 | Hot or smoldering object, other | 16 | 6.1% | |
| 6 | Spark, ember or flame from operating equipment | 12 | 4.5% | |
| 7 | Radiated, conducted heat from operating equipment | 7 | 2.7% | |
| 8 | Cigarette lighter | 5 | 1.9% | |
| 9 | All other sources | 33 | 12.5% |
Largest single-incident losses in ZIP 94577 across 2021–2025. These 8 fires alone account for 272% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $1,750,000 | Building fires | 2024 | Major |
| 2 | $1,000,000 | Building fires | 2023 | Major |
| 3 | $1,000,000 | Building fires | 2024 | Major |
| 4 | $1,000,000 | Road freight or transport vehicle fire | 2025 | Major |
| 5 | $912,000 | Building fires | 2025 | Major |
| 6 | $750,000 | Building fires | 2024 | Major |
| 7 | $655,400 | Building fires | 2023 | Major |
| 8 | $655,400 | Building fires | 2023 | Major |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 94577.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | San Leandro | 1,856 | |
| 2 | San Lorenzo | 3 | |
| 3 | Castro Valley | 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 — 1,860 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.