ZIP 90621 recorded 81 fire and hazmat incidents in 2025, 503 across 2021–2025. Primary county: Orange County, CA. FEMA NRI rates wildfire risk here as Very High.
503 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 106 | |
| 2022 | 101 | |
| 2023 | 109 | |
| 2024 | 106 | |
| 2025 | 81 |
Jul peaks. Mar dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 90621 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Outside rubbish, trash or waste fire | 138 | 27.4% | |
| 2 | Passenger vehicle fire | 53 | 10.5% | |
| 3 | Dumpster or other outside trash receptacle fire | 45 | 8.9% | |
| 4 | Building fires | 44 | 8.7% | |
| 5 | Unauthorized burning | 25 | 5.0% |
For the 6 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 90621 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 68 | 19.4% | |
| 2 | Other | 54 | 15.4% | |
| 3 | Engine area, running gear, wheel area | 34 | 9.7% | |
| 4 | Highway, parking lot, street: on or near | 31 | 8.9% | |
| 5 | Railroad right of way: on or near | 30 | 8.6% | |
| 6 | Chute/container - trash, rubbish, waste | 26 | 7.4% | |
| 7 | Outside area, other | 16 | 4.6% | |
| 8 | Cooking area, kitchen | 12 | 3.4% | |
| 9 | All other areas | 79 | 22.6% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 219 | 62.6% | |
| 2 | Cigarette lighter | 16 | 4.6% | |
| 3 | Radiated, conducted heat from operating equipment | 14 | 4.0% | |
| 4 | Arcing | 14 | 4.0% | |
| 5 | Hot or smoldering object, other | 14 | 4.0% | |
| 6 | Fireworks | 13 | 3.7% | |
| 7 | Heat source: other | 11 | 3.1% | |
| 8 | Heat from powered equipment, other | 11 | 3.1% | |
| 9 | All other sources | 38 | 10.9% |
Largest single-incident losses in ZIP 90621 across 2021–2025. These 8 fires alone account for 324% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $2,000,000 | Building fires | 2022 | Major |
| 2 | $1,200,000 | Building fires | 2025 | Major |
| 3 | $500,000 | Building fires | 2021 | Major |
| 4 | $500,000 | Building fires | 2023 | Major |
| 5 | $500,000 | Building fires | 2024 | Major |
| 6 | $300,000 | Building fires | 2022 | Major |
| 7 | $250,000 | Building fires | 2025 | Major |
| 8 | $200,000 | Building fires | 2025 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 90621.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Buena Park | 476 | |
| 2 | La Mirada | 5 | |
| 3 | Fullerton | 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 — 503 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.