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ZIP-level NFIRS data

Fires in ZIP 53017

ZIP 53017 recorded 24 fire and hazmat incidents in 2025, 97 across 2021–2025. Primary county: Washington County, WI. FEMA NRI rates wildfire risk here as Moderate.

ZIP 53017 FIPS 55131 ZIP-level 2 counties
Total incidents (2025)
24
97 across 5 years
Building fires
13
5 wildland
Wildfire risk
49
FEMA NRI · Moderate
Active fires
0
in Washington County
01 Five-year trend

Year over year in ZIP 53017

97 incidents from 2021 through 2025 inside this ZIP.

YearIncidents 
2021 19
2022 18
2023 14
2024 22
2025 24
02 Seasonality

When do fires happen in ZIP 53017?

Feb peaks. Jan dips. Aggregated across all 5 years inside this ZIP.

Jan 2
Feb 17
Mar 11
Apr 4
May 5
Jun 10
Jul 3
Aug 9
Sep 6
Oct 15
Nov 7
Dec 8
03 Top incident types

What kinds of calls lead in ZIP 53017?

Top 5 NFIRS incident types for ZIP 53017 across 2021–2025.

#Incident typeCountShare 
1 Building fires 24 24.7%
2 Arcing, shorted electrical equipment 21 21.6%
3 Gas leak (natural gas or LPG) 10 10.3%
4 Carbon monoxide incident 8 8.2%
5 Brush, or brush and grass mixture fire 6 6.2%
04 Cause of ignition

What sparks fires in ZIP 53017?

For the 13 building fires reported here in 2025, here's how investigators classified ignition cause.

Unintentional
41%
7
Cause undetermined
24%
4
Intentional / arson
0%
0
Equipment / heat source failure
18%
3
Under investigation
12%
2
Act of nature (lightning)
5%
1
05 Where fires start

Where in the building fires start

NFIRS Area of Origin for ZIP 53017 fires across 2021–2025.

#Area of originCountShare 
1 Undetermined 4 23.5%
2 Engine area, running gear, wheel area 3 17.6%
3 Open area - outside; included are farmland, field 2 11.8%
4 Other 1 5.9%
5 Cooking area, kitchen 1 5.9%
6 Vehicle storage area; garage, carport 1 5.9%
7 Duct: hvac, cable, exhaust, heating, or AC 1 5.9%
8 Switchgear area, transformer vault 1 5.9%
9 All other areas 3 17.6%
06 What ignited it

The leading heat sources here

NFIRS HEAT_SOURC code — the physical thing that started the fire.

#Heat sourceCountShare 
1 Undetermined 7 41.2%
2 Heat from powered equipment, other 2 11.8%
3 Radiated, conducted heat from operating equipment 2 11.8%
4 Heat source: other 1 5.9%
5 Arcing 1 5.9%
6 Heat, spark from friction 1 5.9%
7 Heat from other open flame or smoking materials 1 5.9%
8 Match 1 5.9%
9 All other sources 1 5.9%
07 The biggest fires

5 fires · $768K in losses

Largest single-incident losses in ZIP 53017 across 2021–2025. These 5 fires alone account for 102% of the ZIP's 2025 reported total.

#Property lossTypeYearSeverity
1 $750,000 Building fires 2025 Major
2 $10,250 Outside equipment fire 2023 Significant
3 $5,000 Passenger vehicle fire 2021 Significant
4 $2,000 Mobile property (vehicle) fire, other 2021 Significant
5 $800 Fire in portable building, fixed location 2023 Significant
08 Cities in this ZIP

Most active cities in ZIP 53017

Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 53017.

#City5-yr incidents 
1 Richfield 4
2 Germantown 2
10 Also served by

ZIP 53017 crosses 2 counties

Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.

CountyStateWeight 
Waukesha County WI 1.00 FIPS 55133
11 Current conditions

Right now in 53017

The figures above are historical. For today's air quality, fire-weather warnings, and active fires, go to the official sources.

About ZIP-level data

NFIRS reports each fire incident with a 5-digit address ZIP. We aggregate those rows directly to produce ZIP-level totals — 97 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.