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2025 County Report

Fires in Mille Lacs County, MN

In 2025, fire departments serving Mille Lacs County responded to 151 fire and hazmat incidents — including a single $400K property loss. FEMA NRI rates wildfire risk here as High.

11,454 residents FIPS 27095 17 cities · 5 fire depts
Total incidents
151
927 across 5 years
Building fires
39
35 wildland
Property loss
$3.4M
$2.2M structure · $1.2M 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 67% of all calls.

151
Total Incidents
Building fires 39 25.8%
Gas leak (natural gas or LPG) 26 17.2%
Grass fire 23 15.2%
Brush, or brush and grass mixture fire 7 4.6%
Carbon monoxide incident 7 4.6%
All other categories 49 32.5%
02 Seasonality

When do fires happen in Mille Lacs County?

Mar peaks. Dec dips.

Jan 10
Feb 14
Mar 21
Apr 21
May 10
Jun 16
Jul 12
Aug 6
Sep 7
Oct 11
Nov 18
Dec 5
03 Five-year trend

Year over year in Mille Lacs County

927 incidents from 2021 through 2025.

YearIncidents 
2021 227
2022 218
2023 169
2024 162
2025 151
04 Cause of ignition

What sparks building fires?

For the 39 building fires departments responded to in 2025, here's how investigators classified them.

Unintentional
42%
19
Cause undetermined
20%
9
Intentional / arson
4%
2
Equipment / heat source failure
4%
2
Under investigation
24%
11
Act of nature (lightning)
6%
2
05 The biggest fires

10 fires · $1.8M in losses

Largest single-incident property losses in Mille Lacs County during 2025. These 10 fires alone account for 84% of the county's total.

#Property lossCityTypeSeverity
1 $400,000 Princeton Building fires Major
2 $250,000 Onamia Building fires Major
3 $250,000 Foreston Building fires Major
4 $200,000 Onamia Building fires Significant
5 $200,000 Onamia Building fires Significant
6 $200,000 Onamia Building fires Significant
7 $100,000 Princeton Off-road vehicle or heavy equipment fire Significant
8 $80,000 Princeton Camper or recreational vehicle (RV) fire Significant
9 $75,000 Princeton Road freight or transport vehicle fire Significant
10 $50,000 Milaca Building fires Significant
06 How Mille Lacs County compares

Mille Lacs County vs MN vs the nation

Per-capita rates let us compare apples to apples.

13.18
Incidents per 1,000 residents
Mille Lacs County
13.18
MN avg
7.36
US avg
7.15
3.4
Building fires per 1,000 residents
Mille Lacs County
3.4
MN avg
1.08
US avg
0.82
0
Civilian fire deaths per million
Mille Lacs County
0
MN avg
4.4
US avg
5.8
07 Cities in this county

Largest cities in Mille Lacs County

12 cities mapped to FIPS 27095.

08 First responders

Busiest fire departments in Mille Lacs County

5 departments report from this county.

MILACA FIRE DEPT
—
FDID 48103 40 incidents
ISLE FIRE DEPT
—
FDID 48102 39 incidents
ONAMIA FIRE DEPT
—
FDID 48104 39 incidents
PRINCETON FIRE DEPT
—
FDID 48105 35 incidents
FORESTON FIRE DEPT
—
FDID 48101 9 incidents
09 Historical wildfires

Largest fires recorded in MN

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

#NameYearAgencyAcres
1 Greenwood 2021 USFS 26,829
2 MNGLR-FY21-WF-Oxcart 2021 FWS 12,536
3 Palsburg 2015 FWS 4,456
4 Agassiz NWR Project RX 2024 FWS 4,208
5 MNSBR-FY19-RX-UNIT 4a 6 6a 2019 FWS 2,989
6 RL 005 UNIT 8 & 9 2021 BIA 2,937
7 4 Square Mile RX 2024 FWS 2,481
8 RL 029 2018 BIA 2,360
9 Unit 8E RX 2024 FWS 2,241
10 MNSBR-FY19-RX-UNIT 7 9 11 2019 FWS 2,193

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.