ZIP 53021 recorded 50 fire and hazmat incidents in 2025, 190 across 2021–2025. Primary county: Ozaukee County, WI.
190 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 40 | |
| 2022 | 26 | |
| 2023 | 41 | |
| 2024 | 33 | |
| 2025 | 50 |
Dec peaks. Sep dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 53021 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 75 | 39.5% | |
| 2 | Gas leak (natural gas or LPG) | 17 | 8.9% | |
| 3 | Power line down | 14 | 7.4% | |
| 4 | Carbon monoxide incident | 8 | 4.2% | |
| 5 | Chimney or flue fire, confined to chimney or flue | 7 | 3.7% |
For the 20 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 53021 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Outside area, other | 5 | 15.6% | |
| 2 | Undetermined | 4 | 12.5% | |
| 3 | Other | 3 | 9.4% | |
| 4 | Cooking area, kitchen | 3 | 9.4% | |
| 5 | Vehicle storage area; garage, carport | 3 | 9.4% | |
| 6 | Engine area, running gear, wheel area | 3 | 9.4% | |
| 7 | Vehicle area, other | 2 | 6.2% | |
| 8 | Function area, other | 1 | 3.1% | |
| 9 | All other areas | 8 | 25.0% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 9 | 28.1% | |
| 2 | Heat from powered equipment, other | 5 | 15.6% | |
| 3 | Arcing | 3 | 9.4% | |
| 4 | Hot or smoldering object, other | 3 | 9.4% | |
| 5 | Heat source: other | 2 | 6.2% | |
| 6 | Spark, ember or flame from operating equipment | 2 | 6.2% | |
| 7 | Cigarette lighter | 2 | 6.2% | |
| 8 | Heat from other open flame or smoking materials | 1 | 3.1% | |
| 9 | All other sources | 5 | 15.6% |
Largest single-incident losses in ZIP 53021 across 2021–2025. These 8 fires alone account for 907% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $455,000 | Building fires | 2024 | Major |
| 2 | $225,000 | Building fires | 2023 | Significant |
| 3 | $170,000 | Building fires | 2021 | Significant |
| 4 | $100,000 | Building fires | 2025 | Significant |
| 5 | $25,000 | Building fires | 2024 | Significant |
| 6 | $10,000 | Passenger vehicle fire | 2025 | Significant |
| 7 | $8,000 | Passenger vehicle fire | 2022 | Significant |
| 8 | $5,000 | Passenger vehicle fire | 2024 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 53021.
Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.
| County | State | Weight | |
|---|---|---|---|
| Washington County | WI | 1.00 | FIPS 55131 |
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 — 190 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.