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2025 Annual Fire Report

Fires in Wonder Lake, Illinois

In 2025, fire departments serving Wonder Lake responded to 111 fire and hazmat incidents — from cooking fires to gas leaks to a single $300K building blaze. Here's the full picture.

Updated Sep 27, 2026 Grade C+ Peak yr 2023 McHenry County 3,833 residents 0 reporting departments 458 5-yr
Total incidents
111
+15.6% vs 2024
Building fires
34
Residential 65% Other 35%
Property loss
$635K
$516K structure · $119K contents
Deaths & injuries
0 / 0
0 civilian deaths · 0 civ injuries · 0 firefighter injuries
01 The mix

What kinds of fires happen here?

Building fires lead by count. Building fires lead by dollars. Together the top five categories make up about 67% of all calls.

111
Total Incidents
Building fires 34 30.6%
Electrical wiring/equipment problem, other 11 9.9%
Gas leak (natural gas or LPG) 10 9.0%
Power line down 10 9.0%
Carbon monoxide incident 9 8.1%
All other categories 37 33.3%
02 Seasonality

When do fires happen?

Jul peaks. Jan dips. Watch for the typical fall climb starting in October.

Jan 1
Feb 12
Mar 8
Apr 9
May 8
Jun 9
Jul 13
Aug 6
Sep 11
Oct 11
Nov 11
Dec 12
Fewer
More
2b Five-year trend

Year over year in Wonder Lake

458 incidents 2021–2025. Peak year was 2023. $1.9M cumulative property loss.

YearIncidentsYoY 
2021 60 —
2022 77 +28.3%
2023 114 +48.1%
2024 96 -15.8%
2025 111 +15.6%
03 Cause of ignition

What sparks building fires?

For the 34 building fires Wonder Lake departments responded to in 2025, here's how they were classified once investigators were finished.

Unintentional
43%
6
Cause undetermined
14%
2
Intentional / arson
14%
2
Equipment / heat source failure
7%
1
Under investigation
21%
3
Act of nature (lightning)
1%
0
3b Where fires start

Where do fires start in Wonder Lake?

NFIRS Area of Origin (AREA_ORIG) for the 57 building fires investigators classified across 2021–2025. The room or location where ignition occurred — kitchens, bedrooms, exterior, vehicle areas — tells you where to focus prevention.

#Area of originCountShare 
1 Undetermined 12 21.1%
2 Other 9 15.8%
3 Engine area, running gear, wheel area 6 10.5%
4 Outside area, other 5 8.8%
5 Open area - outside; included are farmland, field 5 8.8%
6 Cooking area, kitchen 4 7.0%
7 Exterior balcony, unenclosed porch 2 3.5%
8 Cargo/trunk area - all vehicles 2 3.5%
9 Laundry area, wash house (laundry) 1 1.8%
10 Office 1 1.8%
11 All other areas 10 17.5%
3c What ignited it

What actually ignited the fire?

NFIRS Heat Source (HEAT_SOURC) — the physical thing that started it. Spark or ember from operating equipment, an open flame, smoking materials, or hot embers from a fireplace are the leading culprits nationwide. Here's the Wonder Lake mix.

#Heat sourceCountShare 
1 Undetermined 28 49.1%
2 Hot ember or ash 6 10.5%
3 Heat from powered equipment, other 5 8.8%
4 Hot or smoldering object, other 5 8.8%
5 Heat source: other 4 7.0%
6 Arcing 3 5.3%
7 Spark, ember or flame from operating equipment 1 1.8%
8 Radiated, conducted heat from operating equipment 1 1.8%
9 Heat, spark from friction 1 1.8%
10 Match 1 1.8%
11 All other sources 2 3.5%
04 The biggest fires

7 fires · $516K in losses

Largest single-incident property losses reported by Wonder Lake departments in 2025. These 7 fires alone account for 100% of the city's annual total.

# Property loss Type Severity Status
1 $300,000 Building fires Major Investigated
2 $100,000 Building fires Significant Investigated
3 $100,000 Building fires Significant Investigated
4 $10,000 Passenger vehicle fire Significant Investigated
5 $5,000 Fire, other Significant Investigated
6 $1,000 Building fires Significant Investigated
7 $50 Outside rubbish, trash or waste fire Significant Investigated
05 How Wonder Lake compares

Wonder Lake vs Illinois vs the nation

Per-capita rates let us compare apples to apples. Wonder Lake sits above the national average for incidents per resident.

28.96
Incidents per 1,000 residents
Wonder Lake
28.96
IL avg
10.41
US avg
7.48
8.87
Building fires per 1,000 residents
Wonder Lake
8.87
IL avg
1.55
US avg
0.85
0
Civilian fire deaths per million
Wonder Lake
0
IL avg
9.9
US avg
5.9
5c Wildfires nearby

Wildfires within 50 mi of Wonder Lake

Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 2,854 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.

50 mi radius
YearCauseAcresDistance 
2015 Misuse of fire by a minor 750 27.8 mi
2003 Missing data/not specified/undetermined 450 26.5 mi
2018 Debris and open burning 252 48.4 mi
2010 Natural 200 36.4 mi
2010 Natural 180 35.9 mi
2010 Equipment and vehicle use 80 19.9 mi
2012 Missing data/not specified/undetermined 80 6.8 mi
2020 Arson/incendiarism 76 30.1 mi
2003 Recreation and ceremony 75 25.2 mi
2010 Missing data/not specified/undetermined 70 49.8 mi
2020 Missing data/not specified/undetermined 60 22.5 mi
2010 Debris and open burning 53 31.0 mi
5d Top ZIPs

Where in Wonder Lake do fires concentrate?

Top 5 ZIP codes by NFIRS incident count across 2021–2025. Each ZIP has its own fire profile — dive in for neighborhood-level context.

#ZIP5-yr incidents 
1 60097 443
2 60034 5
3 60072 4
4 60098 4
5 60050 2
5e Peer cities

Cities similar to Wonder Lake

Six Illinois cities with population within ±25% of Wonder Lake. Useful comparison targets — same state, similar size, different fire profile.

07 Stay prepared

Before the next Red Flag day.

A 30-minute weekend can cut your home's exposure substantially. These four checklists are a good starting point.

About this data

Numbers reflect incidents reported by participating fire departments to the National Fire Incident Reporting System (NFIRS) Public Data Release for calendar year 2025. NFIRS is voluntary — about 23,000 of roughly 30,000 US fire departments report — so totals are a strong indicator, not a complete census. Per-capita comparisons use 2023 ACS population estimates. Wildland fire data complements NFIRS with NIFC and USFS perimeters. Active-fire counts come from a dated NIFC snapshot, not a live feed.