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2025 County Report

Fires in Lake County, MT

In 2025, fire departments serving Lake County responded to 143 fire and hazmat incidents — including a single $831K property loss. FEMA NRI rates wildfire risk here as Very High.

15,027 residents FIPS 30047 31 cities · 16 fire depts
Total incidents
143
1,276 across 5 years
Building fires
17
30 wildland
Property loss
$4.3M
$2.9M structure · $1.4M contents
Casualties
0 / 0
0 civ deaths · 0 civ inj · 0 FF inj
01 The mix

What kinds of fires happen here?

Building fires lead by count. Top five categories make up about 48% of all calls.

143
Total Incidents
Building fires 17 11.9%
Authorized controlled burning 17 11.9%
Power line down 15 10.5%
Chimney or flue fire, confined to chimney or flue 10 7.0%
Brush, or brush and grass mixture fire 10 7.0%
All other categories 74 51.7%
02 Seasonality

When do fires happen in Lake County?

May peaks. Nov dips.

Jan 8
Feb 10
Mar 13
Apr 11
May 17
Jun 16
Jul 16
Aug 11
Sep 9
Oct 9
Nov 6
Dec 17
03 Five-year trend

Year over year in Lake County

1,276 incidents from 2021 through 2025.

YearIncidents 
2021 290
2022 255
2023 256
2024 332
2025 143
04 Cause of ignition

What sparks building fires?

For the 17 building fires departments responded to in 2025, here's how investigators classified them.

Unintentional
43%
10
Cause undetermined
13%
3
Intentional / arson
13%
3
Equipment / heat source failure
4%
1
Under investigation
22%
5
Act of nature (lightning)
5%
1
05 The biggest fires

10 fires · $2.9M in losses

Largest single-incident property losses in Lake County during 2025. These 10 fires alone account for 98% of the county's total.

#Property lossCityTypeSeverity
1 $831,000 Polson Building fires Major
2 $700,000 Big Arm Building fires Major
3 $500,000 POLSON Building fires Major
4 $350,000 Polson Building fires Major
5 $150,000 Big Arm Passenger vehicle fire Significant
6 $130,000 Polson Building fires Significant
7 $75,000 Polson Building fires Significant
8 $60,000 Polson Building fires Significant
9 $50,000 POLSON Outside equipment fire Significant
10 $50,000 Polson Off-road vehicle or heavy equipment fire Significant
06 How Lake County compares

Lake County vs MT vs the nation

Per-capita rates let us compare apples to apples.

9.52
Incidents per 1,000 residents
Lake County
9.52
MT avg
7.52
US avg
7.15
1.13
Building fires per 1,000 residents
Lake County
1.13
MT avg
0.62
US avg
0.82
0
Civilian fire deaths per million
Lake County
0
MT avg
5.2
US avg
5.8
07 Cities in this county

Largest cities in Lake County

12 cities mapped to FIPS 30047.

08 First responders

Busiest fire departments in Lake County

16 departments report from this county.

Polson VFD
—
FDID 15001 29 incidents
Chief Cliff VFC
—
FDID 15034 20 incidents 1 vol
Rollins RFD
—
FDID 15032 18 incidents
CharloMoiese VFD
Charlo
FDID 15004 16 incidents 1 vol
St Ignatius VFD
—
FDID 15003 7 incidents 1 vol
09 Historical wildfires

Largest fires recorded in MT

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

#NameYearAgencyAcres
1 Lodgepole Complex 2017 BLM 271,420
2 Derby 2006 USFS 207,237
3 Rice Ridge 2017 USFS 160,001
4 Pine Ridge Complex 2006 BLM 114,655
5 Dunn Mountain 2008 BLM 102,324
6 SartinDraw 2017 USFS 99,713
7 TaylorCreek 2012 USFS 62,148
8 Trail Creek 2021 USFS 62,012
9 Stag 2000 USFS 61,727
10 StormCreek 1988 USFS 58,721

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.