ZIP 94020 recorded 42 fire and hazmat incidents in 2025, 334 across 2021–2025. Primary county: San Mateo County, CA. FEMA NRI rates wildfire risk here as Very High.
334 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 102 | |
| 2022 | 39 | |
| 2023 | 83 | |
| 2024 | 68 | |
| 2025 | 42 |
Jan peaks. May dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 94020 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Hazardous condition, other | 110 | 32.9% | |
| 2 | Power line down | 103 | 30.8% | |
| 3 | Building fires | 12 | 3.6% | |
| 4 | Electrical wiring/equipment problem, other | 12 | 3.6% | |
| 5 | Arcing, shorted electrical equipment | 12 | 3.6% |
For the 5 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 94020 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Common room, den, family room, living room, lounge | 3 | 20.0% | |
| 2 | Attic: vacant, crawl space above top story, cupola | 2 | 13.3% | |
| 3 | Engine area, running gear, wheel area | 2 | 13.3% | |
| 4 | Outside area, other | 2 | 13.3% | |
| 5 | Storage area, other | 1 | 6.7% | |
| 6 | Vehicle storage area; garage, carport | 1 | 6.7% | |
| 7 | Vehicle area, other | 1 | 6.7% | |
| 8 | Cargo/trunk area - all vehicles | 1 | 6.7% | |
| 9 | All other areas | 2 | 13.3% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Arcing | 4 | 26.7% | |
| 2 | Heat source: other | 2 | 13.3% | |
| 3 | Heat from powered equipment, other | 2 | 13.3% | |
| 4 | Heat spread from another fire, other | 2 | 13.3% | |
| 5 | Undetermined | 2 | 13.3% | |
| 6 | Hot or smoldering object, other | 1 | 6.7% | |
| 7 | Match | 1 | 6.7% | |
| 8 | Conducted heat from another fire | 1 | 6.7% |
Largest single-incident losses in ZIP 94020 across 2021–2025. These 8 fires alone account for 113% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $1,000,000 | Building fires | 2025 | Major |
| 2 | $850,000 | Building fires | 2025 | Major |
| 3 | $172,848 | Building fires | 2024 | Significant |
| 4 | $100,000 | Building fires | 2025 | Significant |
| 5 | $30,000 | Passenger vehicle fire | 2024 | Significant |
| 6 | $25,000 | Building fires | 2023 | Significant |
| 7 | $15,000 | Passenger vehicle fire | 2023 | Significant |
| 8 | $10,000 | Outside storage fire | 2023 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 94020.
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 — 334 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.