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2025 County Report

Fires in Poweshiek County, IA

In 2025, fire departments serving Poweshiek County responded to 187 fire and hazmat incidents — including a single $100K property loss. FEMA NRI rates wildfire risk here as Moderate.

13,711 residents FIPS 19157 14 cities · 7 fire depts
Total incidents
187
704 across 5 years
Building fires
15
39 wildland
Property loss
$536K
$425K structure · $111K contents
Casualties
0 / 1
0 civ deaths · 0 civ inj · 1 FF inj
01 The mix

What kinds of fires happen here?

Grass fire lead by count. Top five categories make up about 42% of all calls.

187
Total Incidents
Grass fire 20 10.7%
Brush, or brush and grass mixture fire 16 8.6%
Building fires 15 8.0%
Unauthorized burning 15 8.0%
Cooking fire, confined to container 12 6.4%
All other categories 109 58.3%
02 Seasonality

When do fires happen in Poweshiek County?

Mar peaks. Dec dips.

Jan 18
Feb 16
Mar 39
Apr 21
May 14
Jun 13
Jul 7
Aug 12
Sep 16
Oct 15
Nov 11
Dec 5
03 Five-year trend

Year over year in Poweshiek County

704 incidents from 2021 through 2025.

YearIncidents 
2021 110
2022 136
2023 107
2024 164
2025 187
04 Cause of ignition

What sparks building fires?

For the 15 building fires departments responded to in 2025, here's how investigators classified them.

Unintentional
56%
28
Cause undetermined
8%
4
Intentional / arson
8%
4
Equipment / heat source failure
16%
8
Under investigation
4%
2
Act of nature (lightning)
8%
1
05 The biggest fires

10 fires · $403K in losses

Largest single-incident property losses in Poweshiek County during 2025. These 10 fires alone account for 95% of the county's total.

#Property lossCityTypeSeverity
1 $100,000 City of Montezuma Forest, woods or wildland fire Significant
2 $75,000 City of Malcom Off-road vehicle or heavy equipment fire Significant
3 $60,000 City of Grinnell Building fires Significant
4 $55,000 City of Grinnell Fire in mobile home used as fixed residence Significant
5 $40,000 City of Grinnell Building fires Significant
6 $25,000 Grinnell Road freight or transport vehicle fire Significant
7 $20,000 City of Malcom Passenger vehicle fire Significant
8 $13,000 City of Grinnell Passenger vehicle fire Significant
9 $10,000 Grinnell Building fires Significant
10 $4,500 Grinnell Passenger vehicle fire Significant
06 How Poweshiek County compares

Poweshiek County vs IA vs the nation

Per-capita rates let us compare apples to apples.

13.64
Incidents per 1,000 residents
Poweshiek County
13.64
IA avg
9.41
US avg
7.15
1.09
Building fires per 1,000 residents
Poweshiek County
1.09
IA avg
1.15
US avg
0.82
0
Civilian fire deaths per million
Poweshiek County
0
IA avg
7.3
US avg
5.8
07 Cities in this county

Largest cities in Poweshiek County

12 cities mapped to FIPS 19157.

08 First responders

Busiest fire departments in Poweshiek County

7 departments report from this county.

GRINNELL FIRE DEPT
—
FDID 79003 150 incidents
MALCOM FIRE DEPT
—
FDID 79006 18 incidents
SEARSBORO FIRE DEPT
—
FDID 79008 13 incidents
BROOKLYN FIRE DEPT
—
FDID 79001 9 incidents
DEEP RIVER FIRE DEPT
—
FDID 79002 4 incidents
09 Historical wildfires

Largest fires recorded in IA

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

#NameYearAgencyAcres
1 IAWTR-FY19-RX-Dunbar Slough 2019 FWS 759
2 IANSR-FY19-RX-Highpoint Savanna 2019 FWS 737
3 IANSR-FY19-RX-N. Bison/Henslow hill 2019 FWS 482
4 Upper Iowa River Wildfire 2024 FWS 465
5 Cornland Wildfire 2018 FWS 402
6 Bottoms WF 2021 PRI 353
7 Crane Lake WF 2021 State 349
8 IAWTR-FY19-RX-Union Hills North 2019 FWS 315
9 Schott WF 2018 FWS 314
10 IAWTR-FY19-RX-Errington Marsh 2019 FWS 304

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.