ZIP 51101 recorded 150 fire and hazmat incidents in 2025, 622 across 2021–2025. Primary county: Woodbury County, IA. FEMA NRI rates wildfire risk here as Very High.
622 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 42 | |
| 2022 | 105 | |
| 2023 | 155 | |
| 2024 | 170 | |
| 2025 | 150 |
Oct peaks. Feb dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 51101 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Unauthorized burning | 122 | 19.6% | |
| 2 | Vehicle accident, general cleanup | 85 | 13.7% | |
| 3 | Power line down | 65 | 10.5% | |
| 4 | Passenger vehicle fire | 54 | 8.7% | |
| 5 | Outside rubbish, trash or waste fire | 43 | 6.9% |
For the 7 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 51101 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Engine area, running gear, wheel area | 43 | 25.9% | |
| 2 | Undetermined | 23 | 13.9% | |
| 3 | Open area - outside; included are farmland, field | 16 | 9.6% | |
| 4 | Chute/container - trash, rubbish, waste | 15 | 9.0% | |
| 5 | Highway, parking lot, street: on or near | 10 | 6.0% | |
| 6 | Outside area, other | 8 | 4.8% | |
| 7 | Cooking area, kitchen | 6 | 3.6% | |
| 8 | Common room, den, family room, living room, lounge | 5 | 3.0% | |
| 9 | All other areas | 40 | 24.1% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 100 | 60.2% | |
| 2 | Heat from powered equipment, other | 12 | 7.2% | |
| 3 | Arcing | 8 | 4.8% | |
| 4 | Hot ember or ash | 8 | 4.8% | |
| 5 | Hot or smoldering object, other | 5 | 3.0% | |
| 6 | Cigarette | 5 | 3.0% | |
| 7 | Radiated, conducted heat from operating equipment | 4 | 2.4% | |
| 8 | Fireworks | 4 | 2.4% | |
| 9 | All other sources | 20 | 12.0% |
Largest single-incident losses in ZIP 51101 across 2021–2025. These 8 fires alone account for 143% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $500,000 | Outside rubbish, trash or waste fire | 2025 | Major |
| 2 | $150,000 | Building fires | 2021 | Significant |
| 3 | $100,000 | Unauthorized burning | 2022 | Significant |
| 4 | $60,000 | Building fires | 2023 | Significant |
| 5 | $60,000 | Building fires | 2023 | Significant |
| 6 | $60,000 | Building fires | 2023 | Significant |
| 7 | $50,000 | Building fires | 2022 | Significant |
| 8 | $50,000 | Building fires | 2022 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 51101.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Sioux City | 620 |
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 — 622 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.