ZIP 77520 recorded 284 fire and hazmat incidents in 2025, 1,506 across 2021–2025. Primary county: Harris County, TX. FEMA NRI rates wildfire risk here as Very High.
1,506 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 287 | |
| 2022 | 174 | |
| 2023 | 300 | |
| 2024 | 461 | |
| 2025 | 284 |
Jul peaks. Dec dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 77520 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Power line down | 257 | 17.1% | |
| 2 | Gas leak (natural gas or LPG) | 204 | 13.5% | |
| 3 | Outside rubbish, trash or waste fire | 177 | 11.8% | |
| 4 | Building fires | 161 | 10.7% | |
| 5 | Arcing, shorted electrical equipment | 145 | 9.6% |
For the 25 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 77520 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Open area - outside; included are farmland, field | 99 | 20.5% | |
| 2 | Undetermined | 75 | 15.6% | |
| 3 | Engine area, running gear, wheel area | 68 | 14.1% | |
| 4 | Cooking area, kitchen | 26 | 5.4% | |
| 5 | Highway, parking lot, street: on or near | 16 | 3.3% | |
| 6 | Outside area, other | 15 | 3.1% | |
| 7 | Courtyard, patio, porch, terrace | 14 | 2.9% | |
| 8 | Chute/container - trash, rubbish, waste | 13 | 2.7% | |
| 9 | All other areas | 156 | 32.4% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 198 | 41.1% | |
| 2 | Arcing | 66 | 13.7% | |
| 3 | Cigarette lighter | 40 | 8.3% | |
| 4 | Radiated, conducted heat from operating equipment | 38 | 7.9% | |
| 5 | Spark, ember or flame from operating equipment | 21 | 4.4% | |
| 6 | Hot ember or ash | 15 | 3.1% | |
| 7 | Cigarette | 11 | 2.3% | |
| 8 | Hot or smoldering object, other | 10 | 2.1% | |
| 9 | All other sources | 83 | 17.2% |
Largest single-incident losses in ZIP 77520 across 2021–2025. These 8 fires alone account for 151% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $170,000 | Road freight or transport vehicle fire | 2022 | Significant |
| 2 | $150,000 | Road freight or transport vehicle fire | 2024 | Significant |
| 3 | $120,000 | Building fires | 2024 | Significant |
| 4 | $114,000 | Building fires | 2021 | Significant |
| 5 | $105,232 | Building fires | 2025 | Significant |
| 6 | $100,000 | Building fires | 2023 | Significant |
| 7 | $87,271 | Building fires | 2021 | Significant |
| 8 | $87,000 | Building fires | 2022 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 77520.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Baytown | 1,485 | |
| 2 | La Porte | 8 | |
| 3 | Highlands | 3 | |
| 4 | Mont Belvieu | 3 | |
| 5 | Dayton | 2 |
Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.
| County | State | Weight | |
|---|---|---|---|
| Chambers County | TX | 0.50 | FIPS 48071 |
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 — 1,506 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.