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2025 County Report

Fires in Corson County, SD

In 2025, fire departments serving Corson County responded to 7 fire and hazmat incidents — including a single $10K property loss. FEMA NRI rates wildfire risk here as High.

1,772 residents FIPS 46031 17 cities · 5 fire depts
Total incidents
7
137 across 5 years
Building fires
4
1 wildland
Property loss
$39K
$13K structure · $26K 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 100% of all calls.

7
Total Incidents
Building fires 4 57.1%
Fire, other 1 14.3%
Grass fire 1 14.3%
Electrical wiring/equipment problem, other 1 14.3%
02 Seasonality

When do fires happen in Corson County?

Jul peaks. Jan dips.

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

Year over year in Corson County

137 incidents from 2021 through 2025.

YearIncidents 
2021 54
2022 48
2023 16
2024 12
2025 7
04 Cause of ignition

What sparks building fires?

For the 4 building fires departments responded to in 2025, here's how investigators classified them.

Unintentional
50%
1
Cause undetermined
50%
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

2 fires · $13K in losses

Largest single-incident property losses in Corson County during 2025. These 2 fires alone account for 100% of the county's total.

#Property lossCityTypeSeverity
1 $10,000 Morristown Building fires Significant
2 $3,000 Bullhead Building fires Significant
06 How Corson County compares

Corson County vs SD vs the nation

Per-capita rates let us compare apples to apples.

3.95
Incidents per 1,000 residents
Corson County
3.95
SD avg
5.75
US avg
7.15
2.26
Building fires per 1,000 residents
Corson County
2.26
SD avg
0.72
US avg
0.82
0
Civilian fire deaths per million
Corson County
0
SD avg
7.1
US avg
5.8
07 Cities in this county

Largest cities in Corson County

12 cities mapped to FIPS 46031.

08 First responders

Busiest fire departments in Corson County

5 departments report from this county.

Mc Intosh
Mc Intosh
FDID 20002 4 incidents 27 vol
McLaughlin
McLaughlin
FDID 20001 0 incidents 26 vol
Grand River
Grand River
FDID 20003 0 incidents 23 vol
Morristown
Morristown
FDID 20004 0 incidents 25 vol
RA Fire Department
Keldron
FDID 20005 0 incidents 1 paid 2 vol
09 Historical wildfires

Largest fires recorded in SD

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

#NameYearAgencyAcres
1 Jasper 2000 NPS 82,295
2 Cottonwood CA 2016 USFS 41,370
3 Power Dam Road 2024 BIA 15,319
4 INDIAN CANYON 2016 USFS 14,297
5 Casino 2022 BIA 12,636
6 Myrtle 2012 NPS 9,944
7 Turkey Day 2022 BIA 5,945
8 Cold Brook WF 2015 NPS 5,444
9 SHIRTTAIL 1991 NPS 3,750
10 BENT RIM 2020 BIA 3,625

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.