ZIP 78231 recorded 41 fire and hazmat incidents in 2025, 167 across 2021–2025. Primary county: Bexar County, TX. FEMA NRI rates wildfire risk here as Very High.
167 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 34 | |
| 2022 | 28 | |
| 2023 | 34 | |
| 2024 | 30 | |
| 2025 | 41 |
Aug peaks. Apr dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 78231 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 32 | 19.2% | |
| 2 | Arcing, shorted electrical equipment | 21 | 12.6% | |
| 3 | Unauthorized burning | 19 | 11.4% | |
| 4 | Electrical wiring/equipment problem, other | 16 | 9.6% | |
| 5 | Building fires | 10 | 6.0% |
For the 1 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 78231 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Engine area, running gear, wheel area | 7 | 29.2% | |
| 2 | Undetermined | 6 | 25.0% | |
| 3 | Common room, den, family room, living room, lounge | 2 | 8.3% | |
| 4 | Function area, other | 1 | 4.2% | |
| 5 | Bathroom, checkroom, lavatory, locker room | 1 | 4.2% | |
| 6 | Laundry area, wash house (laundry) | 1 | 4.2% | |
| 7 | Office | 1 | 4.2% | |
| 8 | Exterior balcony, unenclosed porch | 1 | 4.2% | |
| 9 | All other areas | 4 | 16.7% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 13 | 54.2% | |
| 2 | Heat from powered equipment, other | 3 | 12.5% | |
| 3 | Radiated, conducted heat from operating equipment | 3 | 12.5% | |
| 4 | Heat source: other | 1 | 4.2% | |
| 5 | Hot or smoldering object, other | 1 | 4.2% | |
| 6 | Heat from undetermined smoking material | 1 | 4.2% | |
| 7 | Match | 1 | 4.2% | |
| 8 | Chemical reaction | 1 | 4.2% |
Largest single-incident losses in ZIP 78231 across 2021–2025. These 8 fires alone account for 163% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $92,855 | Building fires | 2025 | Significant |
| 2 | $35,000 | Passenger vehicle fire | 2021 | Significant |
| 3 | $30,000 | Passenger vehicle fire | 2025 | Significant |
| 4 | $20,000 | Building fires | 2023 | Significant |
| 5 | $14,000 | Passenger vehicle fire | 2021 | Significant |
| 6 | $7,000 | Passenger vehicle fire | 2024 | Significant |
| 7 | $5,000 | Building fires | 2021 | Significant |
| 8 | $5,000 | Cooking fire, confined to container | 2025 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 78231.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | San Antonio | 104 | |
| 2 | Shavano Park | 63 |
Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.
| County | State | Weight | |
|---|---|---|---|
| Medina County | TX | 0.50 | FIPS 48325 |
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 — 167 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.