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ZIP-level NFIRS data

Fires in ZIP 54403

ZIP 54403 recorded 107 fire and hazmat incidents in 2025, 553 across 2021–2025. Primary county: Marathon County, WI. FEMA NRI rates wildfire risk here as Moderate.

ZIP 54403 FIPS 55073 ZIP-level
Total incidents (2025)
107
553 across 5 years
Building fires
23
4 wildland
Wildfire risk
40
FEMA NRI · Moderate
Active fires
0
in Marathon County
01 Five-year trend

Year over year in ZIP 54403

553 incidents from 2021 through 2025 inside this ZIP.

YearIncidents 
2021 123
2022 120
2023 95
2024 108
2025 107
02 Seasonality

When do fires happen in ZIP 54403?

Apr peaks. Sep dips. Aggregated across all 5 years inside this ZIP.

Jan 37
Feb 39
Mar 52
Apr 65
May 51
Jun 49
Jul 53
Aug 43
Sep 33
Oct 51
Nov 36
Dec 44
03 Top incident types

What kinds of calls lead in ZIP 54403?

Top 5 NFIRS incident types for ZIP 54403 across 2021–2025.

#Incident typeCountShare 
1 Building fires 113 20.4%
2 Unauthorized burning 79 14.3%
3 Gas leak (natural gas or LPG) 60 10.8%
4 Carbon monoxide incident 55 9.9%
5 Cooking fire, confined to container 30 5.4%
04 Cause of ignition

What sparks fires in ZIP 54403?

For the 23 building fires reported here in 2025, here's how investigators classified ignition cause.

Unintentional
54%
68
Cause undetermined
25%
31
Intentional / arson
5%
6
Equipment / heat source failure
10%
12
Under investigation
3%
4
Act of nature (lightning)
3%
1
05 Where fires start

Where in the building fires start

NFIRS Area of Origin for ZIP 54403 fires across 2021–2025.

#Area of originCountShare 
1 Cooking area, kitchen 18 14.3%
2 Engine area, running gear, wheel area 16 12.7%
3 Undetermined 10 7.9%
4 Bedroom - < 5 persons; included are jail or prison 7 5.6%
5 Vehicle storage area; garage, carport 7 5.6%
6 Exterior, exposed surface 7 5.6%
7 Wall surface: exterior 6 4.8%
8 Bathroom, checkroom, lavatory, locker room 4 3.2%
9 All other areas 51 40.5%
06 What ignited it

The leading heat sources here

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

#Heat sourceCountShare 
1 Undetermined 43 34.1%
2 Heat from powered equipment, other 14 11.1%
3 Spark, ember or flame from operating equipment 11 8.7%
4 Hot ember or ash 9 7.1%
5 Radiated, conducted heat from operating equipment 7 5.6%
6 Arcing 7 5.6%
7 Hot or smoldering object, other 7 5.6%
8 Heat source: other 6 4.8%
9 All other sources 22 17.5%
07 The biggest fires

8 fires · $1.6M in losses

Largest single-incident losses in ZIP 54403 across 2021–2025. These 8 fires alone account for 296% of the ZIP's 2025 reported total.

#Property lossTypeYearSeverity
1 $300,000 Building fires 2024 Major
2 $250,000 Building fires 2024 Major
3 $230,000 Building fires 2022 Significant
4 $200,000 Building fires 2024 Significant
5 $187,000 Building fires 2023 Significant
6 $150,000 Building fires 2022 Significant
7 $130,000 Building fires 2021 Significant
8 $126,836 Building fires 2025 Significant
08 Cities in this ZIP

Most active cities in ZIP 54403

Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 54403.

#City5-yr incidents 
1 Wausau 546
2 Weston 4
11 Current conditions

Right now in 54403

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 — 553 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.