ZIP 78634 recorded 210 fire and hazmat incidents in 2025, 1,057 across 2021–2025. Primary county: Williamson County, TX. FEMA NRI rates wildfire risk here as Very High.
1,057 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 140 | |
| 2022 | 236 | |
| 2023 | 249 | |
| 2024 | 222 | |
| 2025 | 210 |
Jul peaks. Dec dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 78634 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 173 | 16.4% | |
| 2 | Electrical wiring/equipment problem, other | 80 | 7.6% | |
| 3 | Grass fire | 76 | 7.2% | |
| 4 | Building fires | 64 | 6.1% | |
| 5 | Power line down | 60 | 5.7% |
For the 18 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 78634 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 67 | 27.6% | |
| 2 | Engine area, running gear, wheel area | 40 | 16.5% | |
| 3 | Outside area, other | 29 | 11.9% | |
| 4 | Vehicle storage area; garage, carport | 12 | 4.9% | |
| 5 | Cooking area, kitchen | 10 | 4.1% | |
| 6 | Vehicle area, other | 8 | 3.3% | |
| 7 | Highway, parking lot, street: on or near | 8 | 3.3% | |
| 8 | Open area - outside; included are farmland, field | 8 | 3.3% | |
| 9 | All other areas | 61 | 25.1% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 149 | 61.3% | |
| 2 | Hot or smoldering object, other | 12 | 4.9% | |
| 3 | Heat from powered equipment, other | 9 | 3.7% | |
| 4 | Heat, spark from friction | 8 | 3.3% | |
| 5 | Radiated, conducted heat from operating equipment | 7 | 2.9% | |
| 6 | Arcing | 6 | 2.5% | |
| 7 | Lightning | 6 | 2.5% | |
| 8 | Heat source: other | 5 | 2.1% | |
| 9 | All other sources | 41 | 16.9% |
Largest single-incident losses in ZIP 78634 across 2021–2025. These 8 fires alone account for 120% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $450,000 | Building fires | 2025 | Major |
| 2 | $300,000 | Building fires | 2024 | Major |
| 3 | $250,000 | Building fires | 2024 | Major |
| 4 | $171,988 | Building fires | 2022 | Significant |
| 5 | $150,000 | Road freight or transport vehicle fire | 2025 | Significant |
| 6 | $133,624 | Building fires | 2023 | Significant |
| 7 | $125,000 | Building fires | 2025 | Significant |
| 8 | $100,000 | Building fires | 2023 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 78634.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Hutto | 1,044 | |
| 2 | Round Rock | 4 | |
| 3 | Taylor | 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 — 1,057 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.