ZIP 53089 recorded 112 fire and hazmat incidents in 2025, 524 across 2021–2025. Primary county: Waukesha County, WI. FEMA NRI rates wildfire risk here as Moderate.
524 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 80 | |
| 2022 | 112 | |
| 2023 | 95 | |
| 2024 | 125 | |
| 2025 | 112 |
Jul peaks. Mar dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 53089 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 103 | 19.7% | |
| 2 | Gas leak (natural gas or LPG) | 68 | 13.0% | |
| 3 | Electrical wiring/equipment problem, other | 44 | 8.4% | |
| 4 | Carbon monoxide incident | 31 | 5.9% | |
| 5 | Arcing, shorted electrical equipment | 31 | 5.9% |
For the 19 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 53089 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 14 | 14.4% | |
| 2 | Cooking area, kitchen | 11 | 11.3% | |
| 3 | Engine area, running gear, wheel area | 9 | 9.3% | |
| 4 | Other | 8 | 8.2% | |
| 5 | Outside area, other | 7 | 7.2% | |
| 6 | Open area - outside; included are farmland, field | 6 | 6.2% | |
| 7 | Vehicle storage area; garage, carport | 5 | 5.2% | |
| 8 | Wildland, woods | 4 | 4.1% | |
| 9 | All other areas | 33 | 34.0% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 30 | 30.9% | |
| 2 | Heat source: other | 15 | 15.5% | |
| 3 | Heat from powered equipment, other | 10 | 10.3% | |
| 4 | Arcing | 9 | 9.3% | |
| 5 | Hot ember or ash | 8 | 8.2% | |
| 6 | Radiated, conducted heat from operating equipment | 7 | 7.2% | |
| 7 | Spark, ember or flame from operating equipment | 4 | 4.1% | |
| 8 | Heat from direct flame, convection currents | 3 | 3.1% | |
| 9 | All other sources | 11 | 11.3% |
Largest single-incident losses in ZIP 53089 across 2021–2025. These 8 fires alone account for 276% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $250,000 | Building fires | 2021 | Major |
| 2 | $250,000 | Building fires | 2025 | Major |
| 3 | $200,000 | Building fires | 2022 | Significant |
| 4 | $85,000 | Fire in mobile home used as fixed residence | 2024 | Significant |
| 5 | $60,000 | Building fires | 2025 | Significant |
| 6 | $50,000 | Building fires | 2021 | Significant |
| 7 | $50,000 | Passenger vehicle fire | 2022 | Significant |
| 8 | $50,000 | Building fires | 2023 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 53089.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Sussex | 260 | |
| 2 | Milwaukee | 3 | |
| 3 | Lannon | 2 | |
| 4 | Menomonee Falls | 1 | |
| 5 | Merton | 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 — 524 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.