ZIP 50401 recorded 274 fire and hazmat incidents in 2025, 1,289 across 2021–2025. Primary county: Cerro Gordo County, IA.
1,289 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 223 | |
| 2022 | 244 | |
| 2023 | 285 | |
| 2024 | 263 | |
| 2025 | 274 |
Oct peaks. Feb dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 50401 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Unauthorized burning | 354 | 27.5% | |
| 2 | Building fires | 163 | 12.6% | |
| 3 | Gas leak (natural gas or LPG) | 123 | 9.5% | |
| 4 | Carbon monoxide incident | 106 | 8.2% | |
| 5 | Authorized controlled burning | 93 | 7.2% |
For the 40 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 50401 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Engine area, running gear, wheel area | 49 | 13.4% | |
| 2 | Cooking area, kitchen | 40 | 10.9% | |
| 3 | Open area - outside; included are farmland, field | 24 | 6.5% | |
| 4 | Undetermined | 23 | 6.3% | |
| 5 | Highway, parking lot, street: on or near | 18 | 4.9% | |
| 6 | Outside area, other | 17 | 4.6% | |
| 7 | Chute/container - trash, rubbish, waste | 14 | 3.8% | |
| 8 | Exterior balcony, unenclosed porch | 14 | 3.8% | |
| 9 | All other areas | 168 | 45.8% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 96 | 26.2% | |
| 2 | Radiated, conducted heat from operating equipment | 53 | 14.4% | |
| 3 | Hot ember or ash | 39 | 10.6% | |
| 4 | Arcing | 35 | 9.5% | |
| 5 | Heat from powered equipment, other | 20 | 5.4% | |
| 6 | Heat from other open flame or smoking materials | 13 | 3.5% | |
| 7 | Spark, ember or flame from operating equipment | 12 | 3.3% | |
| 8 | Cigarette lighter | 12 | 3.3% | |
| 9 | All other sources | 87 | 23.7% |
Largest single-incident losses in ZIP 50401 across 2021–2025. These 8 fires alone account for 170% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $735,800 | Building fires | 2023 | Major |
| 2 | $600,000 | Building fires | 2025 | Major |
| 3 | $284,020 | Building fires | 2023 | Major |
| 4 | $206,000 | Building fires | 2021 | Significant |
| 5 | $175,000 | Building fires | 2025 | Significant |
| 6 | $150,000 | Building fires | 2022 | Significant |
| 7 | $150,000 | Building fires | 2025 | Significant |
| 8 | $100,000 | Building fires | 2022 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 50401.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Mason City | 1,284 |
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 — 1,289 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.