ZIP 54858 recorded 16 fire and hazmat incidents in 2025, 76 across 2021–2025. Primary county: Polk County, WI. FEMA NRI rates wildfire risk here as Moderate.
76 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 12 | |
| 2022 | 14 | |
| 2023 | 7 | |
| 2024 | 27 | |
| 2025 | 16 |
Mar peaks. Feb dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 54858 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 22 | 28.9% | |
| 2 | Gas leak (natural gas or LPG) | 11 | 14.5% | |
| 3 | Power line down | 7 | 9.2% | |
| 4 | Grass fire | 6 | 7.9% | |
| 5 | Passenger vehicle fire | 4 | 5.3% |
For the 6 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 54858 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Wall surface: exterior | 5 | 16.7% | |
| 2 | Structural area, other | 3 | 10.0% | |
| 3 | Engine area, running gear, wheel area | 3 | 10.0% | |
| 4 | Outside area, other | 3 | 10.0% | |
| 5 | Undetermined | 3 | 10.0% | |
| 6 | Cooking area, kitchen | 2 | 6.7% | |
| 7 | Other | 1 | 3.3% | |
| 8 | Assembly area - less than 100 persons | 1 | 3.3% | |
| 9 | All other areas | 9 | 30.0% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Hot ember or ash | 8 | 26.7% | |
| 2 | Undetermined | 8 | 26.7% | |
| 3 | Radiated, conducted heat from operating equipment | 4 | 13.3% | |
| 4 | Arcing | 3 | 10.0% | |
| 5 | Cigarette lighter | 2 | 6.7% | |
| 6 | Conducted heat from another fire | 2 | 6.7% | |
| 7 | Molten, hot material | 1 | 3.3% | |
| 8 | Fireworks | 1 | 3.3% | |
| 9 | All other sources | 1 | 3.3% |
Largest single-incident losses in ZIP 54858 across 2021–2025. These 8 fires alone account for 451% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $400,000 | Building fires | 2024 | Major |
| 2 | $275,000 | Building fires | 2023 | Major |
| 3 | $200,000 | Building fires | 2025 | Significant |
| 4 | $150,000 | Building fires | 2022 | Significant |
| 5 | $50,000 | Building fires | 2024 | Significant |
| 6 | $45,000 | Building fires | 2024 | Significant |
| 7 | $45,000 | Building fires | 2025 | Significant |
| 8 | $30,000 | Building fires | 2022 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 54858.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Milltown | 71 |
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 — 76 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.