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2025 County Report

Fires in Jefferson County, CO

In 2025, fire departments serving Jefferson County responded to 2,856 fire and hazmat incidents — including a single $875K property loss. FEMA NRI rates wildfire risk here as Very High.

475,201 residents FIPS 08059 78 cities · 19 fire depts
Total incidents
2,856
14,412 across 5 years
Building fires
205
213 wildland
Property loss
$13.5M
$10.9M structure · $2.6M contents
Casualties
2 / 30
2 civ deaths · 22 civ inj · 8 FF inj
01 The mix

What kinds of fires happen here?

Gas leak (natural gas or LPG) lead by count. Top five categories make up about 49% of all calls.

2,856
Total Incidents
Gas leak (natural gas or LPG) 506 17.7%
Unauthorized burning 309 10.8%
Carbon monoxide incident 227 7.9%
Building fires 205 7.2%
Outside rubbish, trash or waste fire 162 5.7%
All other categories 1,447 50.7%
02 Seasonality

When do fires happen in Jefferson County?

Dec peaks. Feb dips.

Jan 216
Feb 196
Mar 252
Apr 202
May 219
Jun 225
Jul 263
Aug 222
Sep 216
Oct 237
Nov 230
Dec 378
03 Five-year trend

Year over year in Jefferson County

14,412 incidents from 2021 through 2025.

YearIncidents 
2021 2,437
2022 2,966
2023 2,765
2024 3,388
2025 2,856
04 Cause of ignition

What sparks building fires?

For the 205 building fires departments responded to in 2025, here's how investigators classified them.

Unintentional
40%
323
Cause undetermined
26%
211
Intentional / arson
20%
163
Equipment / heat source failure
9%
72
Under investigation
2%
16
Act of nature (lightning)
3%
6
05 The biggest fires

10 fires · $3.6M in losses

Largest single-incident property losses in Jefferson County during 2025. These 10 fires alone account for 33% of the county's total.

#Property lossCityTypeSeverity
1 $875,000 Golden Building fires Major
2 $461,171 Conifer Building fires Major
3 $360,775 LAKEWOOD Building fires Major
4 $360,775 LAKEWOOD Building fires Major
5 $316,745 LAKEWOOD Building fires Major
6 $300,000 UNINC ADAMS Building fires Major
7 $250,000 GOLDEN Building fires Major
8 $246,465 LAKEWOOD Building fires Significant
9 $228,604 WHEAT RIDGE Building fires Significant
10 $214,600 ARVADA Building fires Significant
06 How Jefferson County compares

Jefferson County vs CO vs the nation

Per-capita rates let us compare apples to apples.

6.01
Incidents per 1,000 residents
Jefferson County
6.01
CO avg
8.02
US avg
7.15
0.43
Building fires per 1,000 residents
Jefferson County
0.43
CO avg
0.53
US avg
0.82
4.2
Civilian fire deaths per million
Jefferson County
4.2
CO avg
4.8
US avg
5.8
07 Cities in this county

Largest cities in Jefferson County

12 cities mapped to FIPS 08059.

08 First responders

Busiest fire departments in Jefferson County

19 departments report from this county.

WEST METRO FIRE RESCUE
LAKEWOOD
FDID 05909 1,577 incidents 303 paid 12 vol
ARVADA FPD
ARVADA
FDID 05903 721 incidents 72 paid 80 vol
EVERGREEN FIRE RESCUE
EVERGREEN
FDID 05933 216 incidents 90 vol
ELK CREEK FPD
CONIFER
FDID 05930 160 incidents 10 paid 60 vol
GOLDEN FD
GOLDEN
FDID 05942 148 incidents 8 paid 54 vol
09 Historical wildfires

Largest fires recorded in CO

Top 10 fire perimeters by acres burned (state-scoped fallback while we build out per-county polygons).

#NameYearAgencyAcres
1 Cameron Peak 2020 USFS 208,912
2 Pine Gulch 2020 BLM 138,802
3 Hayman 2002 USFS 137,760
4 Spring Creek 2018 BLM 108,045
5 High Park 2012 BLM 87,306
6 MISSIONARY RIDGE 2002 USFS 70,480
7 WEST FORK 2013 USFS 56,575
8 416 2018 USFS 54,130
9 Papoose 2013 USFS 49,282
10 Bridger 2008 BLM 46,588

About this data

County-level NFIRS aggregates for 2025, plus 5-year totals across 2021–2025. NFIRS is voluntary — about 23,000 of roughly 30,000 US fire departments report — so totals are a strong indicator, not a complete census. Wildfire risk score (0–100) and Expected Annual Loss come from FEMA's National Risk Index. Drought class is the most recent USDM classification (D0 = abnormally dry through D4 = exceptional drought). Historical fire perimeters are sourced from the NIFC InterAgency Fire Perimeter History.