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2025 Annual Fire Report

Fires in Chino Hills, California

In 2025, fire departments serving Chino Hills responded to 124 fire and hazmat incidents — from cooking fires to gas leaks to a single $1.0M building blaze. Here's the full picture.

Updated Sep 27, 2026 Grade A+ Peak yr 2025 San Bernardino County 78,223 residents 0 reporting departments 550 5-yr
Total incidents
124
+9.7% vs 2024
Building fires
12
Residential 67% Other 33%
Property loss
$1.8M
$1.4M structure · $421K contents
Deaths & injuries
0 / 0
0 civilian deaths · 0 civ injuries · 0 firefighter injuries
01 The mix

What kinds of fires happen here?

Electrical wiring/equipment problem, other lead by count. Building fires lead by dollars. Together the top five categories make up about 48% of all calls.

124
Total Incidents
Electrical wiring/equipment problem, other 15 12.1%
Gas leak (natural gas or LPG) 13 10.5%
Building fires 12 9.7%
Carbon monoxide incident 10 8.1%
Outside rubbish fire, other 9 7.3%
All other categories 65 52.4%
02 Seasonality

When do fires happen?

May peaks. Feb dips. Watch for the typical fall climb starting in October.

Jan 13
Feb 4
Mar 8
Apr 6
May 16
Jun 6
Jul 16
Aug 10
Sep 11
Oct 12
Nov 16
Dec 6
Fewer
More
2b Five-year trend

Year over year in Chino Hills

550 incidents 2021–2025. Peak year was 2025. $3.9M cumulative property loss.

YearIncidentsYoY 
2021 94 —
2022 109 +16.0%
2023 110 +0.9%
2024 113 +2.7%
2025 124 +9.7%
03 Cause of ignition

What sparks building fires?

For the 12 building fires Chino Hills departments responded to in 2025, here's how they were classified once investigators were finished.

Unintentional
57%
17
Cause undetermined
13%
4
Intentional / arson
7%
2
Equipment / heat source failure
13%
4
Under investigation
10%
3
Act of nature (lightning)
0%
0
3b Where fires start

Where do fires start in Chino Hills?

NFIRS Area of Origin (AREA_ORIG) for the 139 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 Engine area, running gear, wheel area 45 32.4%
2 Undetermined 18 12.9%
3 Cooking area, kitchen 8 5.8%
4 Vehicle storage area; garage, carport 8 5.8%
5 Outside area, other 7 5.0%
6 Bedroom - < 5 persons; included are jail or prison 6 4.3%
7 Storage area, other 4 2.9%
8 Vehicle area, other 4 2.9%
9 Cargo/trunk area - all vehicles 4 2.9%
10 Other 3 2.2%
11 All other areas 32 23.0%
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 Chino Hills mix.

#Heat sourceCountShare 
1 Undetermined 49 35.3%
2 Heat from powered equipment, other 31 22.3%
3 Heat source: other 13 9.4%
4 Arcing 12 8.6%
5 Hot or smoldering object, other 9 6.5%
6 Radiated, conducted heat from operating equipment 6 4.3%
7 Spark, ember or flame from operating equipment 4 2.9%
8 Heat, spark from friction 3 2.2%
9 Hot ember or ash 2 1.4%
10 Heat from other open flame or smoking materials 2 1.4%
11 All other sources 8 5.8%
04 The biggest fires

8 fires · $1.3M in losses

Largest single-incident property losses reported by Chino Hills departments in 2025. These 8 fires alone account for 97% of the city's annual total.

# Property loss Type Severity Status
1 $1,000,000 Building fires Major Investigated
2 $100,000 Fire in mobile home used as fixed residence Significant Investigated
3 $55,000 Mobile property (vehicle) fire, other Significant Investigated
4 $45,000 Passenger vehicle fire Significant Investigated
5 $40,000 Building fires Significant Investigated
6 $26,000 Fires in structures other than in a building Significant Investigated
7 $25,000 Passenger vehicle fire Significant Investigated
8 $20,000 Building fires Significant Investigated
05 How Chino Hills compares

Chino Hills vs California vs the nation

Per-capita rates let us compare apples to apples. Chino Hills sits below the national average for incidents per resident.

1.59
Incidents per 1,000 residents
Chino Hills
1.59
CA avg
5.32
US avg
7.48
0.15
Building fires per 1,000 residents
Chino Hills
0.15
CA avg
0.32
US avg
0.85
0
Civilian fire deaths per million
Chino Hills
0
CA avg
2.9
US avg
5.9
5c Wildfires nearby

Wildfires within 50 mi of Chino Hills

Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 993,666 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.

50 mi radius
YearCauseAcresDistance 
2009 Arson/incendiarism 160,371 33.3 mi
2020 Missing data/not specified/undetermined 115,997 24.5 mi
2003 Arson/incendiarism 91,281 30.8 mi
1999 Missing data/not specified/undetermined 65,000 40.3 mi
2003 Arson/incendiarism 59,788 20.5 mi
2015 Missing data/not specified/undetermined 51,000 49.3 mi
2002 Arson/incendiarism 37,240 19.6 mi
2016 Missing data/not specified/undetermined 36,274 26.3 mi
2020 Equipment and vehicle use 33,424 43.7 mi
2008 Missing data/not specified/undetermined 30,305 5.4 mi
2007 Missing data/not specified/undetermined 28,476 14.6 mi
1998 Missing data/not specified/undetermined 28,164 49.3 mi
5d Top ZIPs

Where in Chino Hills 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 91709 528
2 91710 16
3 91708 4
4 92879 1
5 92880 1
5e Peer cities

Cities similar to Chino Hills

Six California cities with population within ±25% of Chino Hills. 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.