ZIP 94028 recorded 11 fire and hazmat incidents in 2025, 132 across 2021–2025. Primary county: San Mateo County, CA. FEMA NRI rates wildfire risk here as Very High.
132 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 48 | |
| 2022 | 32 | |
| 2023 | 32 | |
| 2024 | 9 | |
| 2025 | 11 |
May peaks. Jun dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 94028 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Power line down | 32 | 24.2% | |
| 2 | Gas leak (natural gas or LPG) | 18 | 13.6% | |
| 3 | Building fires | 11 | 8.3% | |
| 4 | Electrical wiring/equipment problem, other | 11 | 8.3% | |
| 5 | Grass fire | 8 | 6.1% |
For the 3 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 94028 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Cooking area, kitchen | 4 | 25.0% | |
| 2 | Outside area, other | 3 | 18.8% | |
| 3 | Exterior, exposed surface | 2 | 12.5% | |
| 4 | Entrance way, lobby | 1 | 6.2% | |
| 5 | Storage: supplies or tools; dead storage | 1 | 6.2% | |
| 6 | Duct: hvac, cable, exhaust, heating, or AC | 1 | 6.2% | |
| 7 | Vehicle area, other | 1 | 6.2% | |
| 8 | Operator/passenger area of transportation equip. | 1 | 6.2% | |
| 9 | All other areas | 2 | 12.5% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Radiated, conducted heat from operating equipment | 5 | 31.2% | |
| 2 | Heat from powered equipment, other | 3 | 18.8% | |
| 3 | Heat source: other | 2 | 12.5% | |
| 4 | Arcing | 2 | 12.5% | |
| 5 | Hot or smoldering object, other | 2 | 12.5% | |
| 6 | Spark, ember or flame from operating equipment | 1 | 6.2% | |
| 7 | Heat from undetermined smoking material | 1 | 6.2% |
Largest single-incident losses in ZIP 94028 across 2021–2025. These 6 fires alone account for 0% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $100,000 | Building fires | 2023 | Significant |
| 2 | $30,000 | Building fires | 2021 | Significant |
| 3 | $5,000 | Fire, other | 2021 | Significant |
| 4 | $5,000 | Outside rubbish, trash or waste fire | 2022 | Significant |
| 5 | $250 | Grass fire | 2022 | Significant |
| 6 | $1 | Mobile property (vehicle) fire, other | 2021 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 94028.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Portola Valley | 58 | |
| 2 | Menlo Park | 5 | |
| 3 | Ladera | 1 | |
| 4 | Palo Alto | 1 | |
| 5 | Redwood City | 1 |
Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.
| County | State | Weight | |
|---|---|---|---|
| Santa Clara County | CA | 1.00 | FIPS 06085 |
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 — 132 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.