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ZIP-level NFIRS data

Fires in ZIP 53561

ZIP 53561 recorded 18 fire and hazmat incidents in 2025, 68 across 2021–2025. Primary county: Columbia County, WI. FEMA NRI rates wildfire risk here as Moderate.

ZIP 53561 FIPS 55021 ZIP-level 2 counties
Total incidents (2025)
18
68 across 5 years
Building fires
4
6 wildland
Wildfire risk
42
FEMA NRI · Moderate
Active fires
0
in Columbia County
01 Five-year trend

Year over year in ZIP 53561

68 incidents from 2021 through 2025 inside this ZIP.

YearIncidents 
2021 12
2022 18
2023 7
2024 13
2025 18
02 Seasonality

When do fires happen in ZIP 53561?

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

Jan 4
Feb 1
Mar 8
Apr 12
May 5
Jun 2
Jul 6
Aug 8
Sep 2
Oct 4
Nov 5
Dec 11
03 Top incident types

What kinds of calls lead in ZIP 53561?

Top 5 NFIRS incident types for ZIP 53561 across 2021–2025.

#Incident typeCountShare 
1 Power line down 16 23.5%
2 Building fires 15 22.1%
3 Forest, woods or wildland fire 6 8.8%
4 Gas leak (natural gas or LPG) 5 7.4%
5 Brush, or brush and grass mixture fire 4 5.9%
04 Cause of ignition

What sparks fires in ZIP 53561?

For the 4 building fires reported here in 2025, here's how investigators classified ignition cause.

Unintentional
54%
7
Cause undetermined
8%
1
Intentional / arson
15%
2
Equipment / heat source failure
23%
3
Under investigation
0%
0
Act of nature (lightning)
0%
0
05 Where fires start

Where in the building fires start

NFIRS Area of Origin for ZIP 53561 fires across 2021–2025.

#Area of originCountShare 
1 Courtyard, patio, porch, terrace 2 15.4%
2 Wildland, woods 2 15.4%
3 Exterior stairway, ramp, or fire escape 1 7.7%
4 Cooking area, kitchen 1 7.7%
5 Vehicle storage area; garage, carport 1 7.7%
6 Exterior balcony, unenclosed porch 1 7.7%
7 Wall surface: exterior 1 7.7%
8 Roof surface: exterior 1 7.7%
9 All other areas 3 23.1%
06 What ignited it

The leading heat sources here

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

#Heat sourceCountShare 
1 Undetermined 3 23.1%
2 Flying brand, ember, spark 2 15.4%
3 Heat source: other 1 7.7%
4 Heat from powered equipment, other 1 7.7%
5 Radiated, conducted heat from operating equipment 1 7.7%
6 Arcing 1 7.7%
7 Heat from other open flame or smoking materials 1 7.7%
8 Flame/torch used for lighting 1 7.7%
9 All other sources 2 15.4%
07 The biggest fires

3 fires · $305K in losses

Largest single-incident losses in ZIP 53561 across 2021–2025. These 3 fires alone account for 0% of the ZIP's 2025 reported total.

#Property lossTypeYearSeverity
1 $283,000 Building fires 2023 Major
2 $20,000 Special outside fire, other 2021 Significant
3 $2,000 Building fires 2022 Significant
08 Cities in this ZIP

Most active cities in ZIP 53561

Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 53561.

#City5-yr incidents 
1 Merrimac 57
2 Caledonia 10
3 Portage 1
10 Also served by

ZIP 53561 crosses 2 counties

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

CountyStateWeight 
Sauk County WI 1.00 FIPS 55111
11 Current conditions

Right now in 53561

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 — 68 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.