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2025 County Report

Fires in Custer County, ID

In 2025, fire departments serving Custer County responded to 19 fire and hazmat incidents — including a single $30K property loss. FEMA NRI rates wildfire risk here as Very High.

1,677 residents FIPS 16037 20 cities · 2 fire depts
Total incidents
19
129 across 5 years
Building fires
2
6 wildland
Property loss
$134K
$32K structure · $102K contents
Casualties
0 / 0
0 civ deaths · 0 civ inj · 0 FF inj
01 The mix

What kinds of fires happen here?

Brush, or brush and grass mixture fire lead by count. Top five categories make up about 74% of all calls.

19
Total Incidents
Brush, or brush and grass mixture fire 6 31.6%
Fire, other 3 15.8%
Building fires 2 10.5%
Cooking fire, confined to container 2 10.5%
Chimney or flue fire, confined to chimney or flue 1 5.3%
All other categories 5 26.3%
02 Seasonality

When do fires happen in Custer County?

Jan peaks. Feb dips.

Jan 5
Feb 0
Mar 4
Apr 2
May 0
Jun 1
Jul 1
Aug 3
Sep 1
Oct 1
Nov 0
Dec 1
03 Five-year trend

Year over year in Custer County

129 incidents from 2021 through 2025.

YearIncidents 
2021 19
2022 28
2023 28
2024 35
2025 19
04 Cause of ignition

What sparks building fires?

For the 2 building fires departments responded to in 2025, here's how investigators classified them.

Unintentional
93%
13
Cause undetermined
7%
1
Intentional / arson
0%
0
Equipment / heat source failure
0%
0
Under investigation
0%
0
Act of nature (lightning)
0%
0
05 The biggest fires

3 fires · $32K in losses

Largest single-incident property losses in Custer County during 2025. These 3 fires alone account for 100% of the county's total.

#Property lossCityTypeSeverity
1 $30,000 Mackay Passenger vehicle fire Significant
2 $2,000 Mackay Brush, or brush and grass mixture fire Significant
3 $100 Mackay Outside rubbish, trash or waste fire Significant
06 How Custer County compares

Custer County vs ID vs the nation

Per-capita rates let us compare apples to apples.

11.33
Incidents per 1,000 residents
Custer County
11.33
ID avg
8.41
US avg
7.15
1.19
Building fires per 1,000 residents
Custer County
1.19
ID avg
0.8
US avg
0.82
0
Civilian fire deaths per million
Custer County
0
ID avg
4.4
US avg
5.8
07 Cities in this county

Largest cities in Custer County

12 cities mapped to FIPS 16037.

08 First responders

Busiest fire departments in Custer County

2 departments report from this county.

North Custer Rural Fire Dist
Challis
FDID 37334 12 incidents
South Custer Rural Fire Dist
Mackay
FDID 37354 6 incidents
09 Historical wildfires

Largest fires recorded in ID

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

#NameYearAgencyAcres
1 Elk Mountain 2007 BLM 578,403
2 LONG BUTTE 2010 BLM 305,994
3 Mustang Complex 2012 USFS 287,852
4 SODA 2015 BLM 279,111
5 Diamond Pt Complex 2000 USFS 234,315
6 Pioneer 2016 USFS 188,404
7 PADDOCK 2024 BLM 187,184
8 Halstead 2012 USFS 179,308
9 Clear Creek 2000 USFS 164,755
10 Moose 2022 USFS 130,197

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.