ZIP 94027 recorded 46 fire and hazmat incidents in 2025, 267 across 2021–2025. Primary county: San Mateo County, CA. FEMA NRI rates wildfire risk here as Very High.
267 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 18 | |
| 2022 | 46 | |
| 2023 | 104 | |
| 2024 | 53 | |
| 2025 | 46 |
Mar peaks. Aug dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 94027 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Hazardous condition, other | 61 | 22.8% | |
| 2 | Power line down | 57 | 21.3% | |
| 3 | Electrical wiring/equipment problem, other | 31 | 11.6% | |
| 4 | Gas leak (natural gas or LPG) | 27 | 10.1% | |
| 5 | Building fires | 19 | 7.1% |
For the 5 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 94027 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Cooking area, kitchen | 4 | 12.9% | |
| 2 | Outside area, other | 4 | 12.9% | |
| 3 | Equipment or service area, other | 3 | 9.7% | |
| 4 | Vehicle storage area; garage, carport | 2 | 6.5% | |
| 5 | Attic: vacant, crawl space above top story, cupola | 2 | 6.5% | |
| 6 | Engine area, running gear, wheel area | 2 | 6.5% | |
| 7 | Railroad right of way: on or near | 2 | 6.5% | |
| 8 | Highway, parking lot, street: on or near | 2 | 6.5% | |
| 9 | All other areas | 10 | 32.3% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 9 | 29.0% | |
| 2 | Arcing | 8 | 25.8% | |
| 3 | Heat from powered equipment, other | 5 | 16.1% | |
| 4 | Heat source: other | 2 | 6.5% | |
| 5 | Heat from other open flame or smoking materials | 2 | 6.5% | |
| 6 | Chemical reaction | 2 | 6.5% | |
| 7 | Spark, ember or flame from operating equipment | 1 | 3.2% | |
| 8 | Hot ember or ash | 1 | 3.2% | |
| 9 | All other sources | 1 | 3.2% |
Largest single-incident losses in ZIP 94027 across 2021–2025. These 8 fires alone account for 971% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $517,500 | Building fires | 2023 | Major |
| 2 | $369,000 | Building fires | 2023 | Major |
| 3 | $150,000 | Building fires | 2022 | Significant |
| 4 | $100,000 | Building fires | 2025 | Significant |
| 5 | $69,636 | Building fires | 2022 | Significant |
| 6 | $30,000 | Passenger vehicle fire | 2022 | Significant |
| 7 | $25,000 | Brush, or brush and grass mixture fire | 2023 | Significant |
| 8 | $20,000 | Outside equipment fire | 2025 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 94027.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Atherton | 84 | |
| 2 | Menlo Park | 7 | |
| 3 | North Fair Oaks | 2 | |
| 4 | Redwood City | 1 | |
| 5 | Woodside | 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 — 267 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.