ZIP 91784 recorded 50 fire and hazmat incidents in 2025, 254 across 2021–2025. Primary county: San Bernardino County, CA. FEMA NRI rates wildfire risk here as Very High.
254 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 44 | |
| 2022 | 58 | |
| 2023 | 47 | |
| 2024 | 55 | |
| 2025 | 50 |
Jan peaks. May dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 91784 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Passenger vehicle fire | 39 | 15.4% | |
| 2 | Power line down | 35 | 13.8% | |
| 3 | Gas leak (natural gas or LPG) | 24 | 9.4% | |
| 4 | Outside rubbish fire, other | 15 | 5.9% | |
| 5 | Outside rubbish, trash or waste fire | 14 | 5.5% |
For the 3 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 91784 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 31 | 39.2% | |
| 2 | Engine area, running gear, wheel area | 26 | 32.9% | |
| 3 | Vehicle area, other | 3 | 3.8% | |
| 4 | Operator/passenger area of transportation equip. | 3 | 3.8% | |
| 5 | Vehicle storage area; garage, carport | 2 | 2.5% | |
| 6 | Wall assembly | 2 | 2.5% | |
| 7 | Function area, other | 1 | 1.3% | |
| 8 | Bedroom - < 5 persons; included are jail or prison | 1 | 1.3% | |
| 9 | All other areas | 10 | 12.7% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 60 | 75.9% | |
| 2 | Heat from powered equipment, other | 7 | 8.9% | |
| 3 | Heat source: other | 3 | 3.8% | |
| 4 | Radiated, conducted heat from operating equipment | 2 | 2.5% | |
| 5 | Arcing | 2 | 2.5% | |
| 6 | Hot or smoldering object, other | 2 | 2.5% | |
| 7 | Molten, hot material | 1 | 1.3% | |
| 8 | Conducted heat from another fire | 1 | 1.3% | |
| 9 | All other sources | 1 | 1.3% |
Largest single-incident losses in ZIP 91784 across 2021–2025. These 8 fires alone account for 5321% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $100,000 | Road freight or transport vehicle fire | 2023 | Significant |
| 2 | $80,000 | Fires in structures other than in a building | 2023 | Significant |
| 3 | $65,000 | Passenger vehicle fire | 2024 | Significant |
| 4 | $50,000 | Road freight or transport vehicle fire | 2022 | Significant |
| 5 | $50,000 | Building fires | 2023 | Significant |
| 6 | $50,000 | Building fires | 2024 | Significant |
| 7 | $50,000 | Road freight or transport vehicle fire | 2024 | Significant |
| 8 | $35,000 | Passenger vehicle fire | 2021 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 91784.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Upland | 176 | |
| 2 | San Antonio Heights | 25 |
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 — 254 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.