ZIP 94587 recorded 258 fire and hazmat incidents in 2025, 1,156 across 2021–2025. Primary county: Alameda County, CA. FEMA NRI rates wildfire risk here as Very High.
1,156 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 205 | |
| 2022 | 215 | |
| 2023 | 211 | |
| 2024 | 267 | |
| 2025 | 258 |
Jul peaks. Feb dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 94587 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Outside rubbish, trash or waste fire | 281 | 24.3% | |
| 2 | Trash or rubbish fire, contained | 163 | 14.1% | |
| 3 | Gas leak (natural gas or LPG) | 107 | 9.3% | |
| 4 | Brush, or brush and grass mixture fire | 73 | 6.3% | |
| 5 | Building fires | 68 | 5.9% |
For the 13 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 94587 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 45 | 26.3% | |
| 2 | Cooking area, kitchen | 20 | 11.7% | |
| 3 | Engine area, running gear, wheel area | 16 | 9.4% | |
| 4 | Outside area, other | 13 | 7.6% | |
| 5 | Operator/passenger area of transportation equip. | 8 | 4.7% | |
| 6 | Vehicle storage area; garage, carport | 7 | 4.1% | |
| 7 | Bedroom - < 5 persons; included are jail or prison | 5 | 2.9% | |
| 8 | Common room, den, family room, living room, lounge | 4 | 2.3% | |
| 9 | All other areas | 53 | 31.0% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 81 | 47.4% | |
| 2 | Heat source: other | 17 | 9.9% | |
| 3 | Heat from powered equipment, other | 17 | 9.9% | |
| 4 | Hot or smoldering object, other | 16 | 9.4% | |
| 5 | Arcing | 8 | 4.7% | |
| 6 | Spark, ember or flame from operating equipment | 5 | 2.9% | |
| 7 | Radiated, conducted heat from operating equipment | 5 | 2.9% | |
| 8 | Heat from undetermined smoking material | 5 | 2.9% | |
| 9 | All other sources | 17 | 9.9% |
Largest single-incident losses in ZIP 94587 across 2021–2025. These 8 fires alone account for 289% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $1,000,000 | Building fires | 2023 | Major |
| 2 | $450,000 | Off-road vehicle or heavy equipment fire | 2021 | Major |
| 3 | $350,000 | Building fires | 2024 | Major |
| 4 | $350,000 | Building fires | 2025 | Major |
| 5 | $300,000 | Building fires | 2023 | Major |
| 6 | $300,000 | Building fires | 2025 | Major |
| 7 | $250,000 | Building fires | 2023 | Major |
| 8 | $250,000 | Building fires | 2024 | Major |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 94587.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Union City | 1,147 | |
| 2 | Fremont | 4 | |
| 3 | Hayward | 2 | |
| 4 | 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 — 1,156 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.