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ZIP-level NFIRS data

Fires in ZIP 83420

ZIP 83420 recorded 20 fire and hazmat incidents in 2025, 76 across 2021–2025. Primary county: Fremont County, ID. FEMA NRI rates wildfire risk here as Very High.

ZIP 83420 FIPS 16043 ZIP-level
Total incidents (2025)
20
76 across 5 years
Building fires
1
12 wildland
Wildfire risk
87
FEMA NRI · Very High
Active fires
0
in Fremont County
01 Five-year trend

Year over year in ZIP 83420

76 incidents from 2021 through 2025 inside this ZIP.

YearIncidents 
2021 40
2022 8
2023 3
2024 5
2025 20
02 Seasonality

When do fires happen in ZIP 83420?

Aug peaks. Mar dips. Aggregated across all 5 years inside this ZIP.

Jan 7
Feb 3
Mar 0
Apr 11
May 7
Jun 9
Jul 5
Aug 17
Sep 4
Oct 4
Nov 4
Dec 5
03 Top incident types

What kinds of calls lead in ZIP 83420?

Top 5 NFIRS incident types for ZIP 83420 across 2021–2025.

#Incident typeCountShare 
1 Building fires 21 27.6%
2 Brush, or brush and grass mixture fire 9 11.8%
3 Fire, other 4 5.3%
4 Passenger vehicle fire 4 5.3%
5 Forest, woods or wildland fire 4 5.3%
04 Cause of ignition

What sparks fires in ZIP 83420?

For the 1 building fires reported here in 2025, here's how investigators classified ignition cause.

Unintentional
52%
16
Cause undetermined
3%
1
Intentional / arson
3%
1
Equipment / heat source failure
32%
10
Under investigation
3%
1
Act of nature (lightning)
7%
2
05 Where fires start

Where in the building fires start

NFIRS Area of Origin for ZIP 83420 fires across 2021–2025.

#Area of originCountShare 
1 Common room, den, family room, living room, lounge 4 12.9%
2 Outside area, other 4 12.9%
3 Undetermined 4 12.9%
4 Engine area, running gear, wheel area 3 9.7%
5 Highway, parking lot, street: on or near 3 9.7%
6 Open area - outside; included are farmland, field 3 9.7%
7 Storage area, other 2 6.5%
8 Egress/exit, other 1 3.2%
9 All other areas 7 22.6%
06 What ignited it

The leading heat sources here

NFIRS HEAT_SOURC code — the physical thing that started the fire.

#Heat sourceCountShare 
1 Undetermined 9 29.0%
2 Heat from powered equipment, other 5 16.1%
3 Radiated, conducted heat from operating equipment 4 12.9%
4 Heat from other open flame or smoking materials 4 12.9%
5 Arcing 3 9.7%
6 Explosive, fireworks, other 2 6.5%
7 Heat spread from another fire, other 2 6.5%
8 Hot or smoldering object, other 1 3.2%
9 All other sources 1 3.2%
07 The biggest fires

8 fires · $980K in losses

Largest single-incident losses in ZIP 83420 across 2021–2025. These 8 fires alone account for 0% of the ZIP's 2025 reported total.

#Property lossTypeYearSeverity
1 $300,000 Building fires 2024 Major
2 $200,000 Building fires 2021 Significant
3 $180,000 Off-road vehicle or heavy equipment fire 2023 Significant
4 $150,000 Building fires 2021 Significant
5 $70,000 Building fires 2021 Significant
6 $35,000 Building fires 2021 Significant
7 $25,000 Passenger vehicle fire 2023 Significant
8 $20,000 Fire in motor home, camper, recreational vehicle 2021 Significant
08 Cities in this ZIP

Most active cities in ZIP 83420

Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 83420.

#City5-yr incidents 
1 Ashton 73
2 Rexburg 2
11 Current conditions

Right now in 83420

The figures above are historical. For today's air quality, fire-weather warnings, and active fires, go to the official sources.

About ZIP-level data

NFIRS reports each fire incident with a 5-digit address ZIP. We aggregate those rows directly to produce ZIP-level totals — 76 incidents in this ZIP across 2021–2025. Building-fire breakdowns (Area of Origin, Heat Source, ignition cause) only count fires investigators classified beyond the basic incident report. Because NFIRS reporting is voluntary, totals are a strong indicator rather than a complete census.