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ZIP-level NFIRS data

Fires in ZIP 03086

ZIP 03086 recorded 58 fire and hazmat incidents in 2025, 320 across 2021–2025. Primary county: Hillsborough County, NH. FEMA NRI rates wildfire risk here as High.

ZIP 03086 FIPS 33011 ZIP-level
Total incidents (2025)
58
320 across 5 years
Building fires
3
10 wildland
Wildfire risk
67
FEMA NRI · High
Active fires
0
in Hillsborough County
01 Five-year trend

Year over year in ZIP 03086

320 incidents from 2021 through 2025 inside this ZIP.

YearIncidents 
2021 57
2022 57
2023 94
2024 54
2025 58
02 Seasonality

When do fires happen in ZIP 03086?

Jan peaks. Feb dips. Aggregated across all 5 years inside this ZIP.

Jan 52
Feb 16
Mar 39
Apr 33
May 21
Jun 21
Jul 24
Aug 27
Sep 16
Oct 20
Nov 19
Dec 32
03 Top incident types

What kinds of calls lead in ZIP 03086?

Top 5 NFIRS incident types for ZIP 03086 across 2021–2025.

#Incident typeCountShare 
1 Power line down 101 31.6%
2 Unauthorized burning 76 23.8%
3 Brush, or brush and grass mixture fire 27 8.4%
4 Building fires 14 4.4%
5 Carbon monoxide incident 13 4.1%
04 Cause of ignition

What sparks fires in ZIP 03086?

For the 3 building fires reported here in 2025, here's how investigators classified ignition cause.

Unintentional
54%
19
Cause undetermined
9%
3
Intentional / arson
3%
1
Equipment / heat source failure
14%
5
Under investigation
9%
3
Act of nature (lightning)
11%
4
05 Where fires start

Where in the building fires start

NFIRS Area of Origin for ZIP 03086 fires across 2021–2025.

#Area of originCountShare 
1 Wildland, woods 8 22.9%
2 Highway, parking lot, street: on or near 6 17.1%
3 Open area - outside; included are farmland, field 5 14.3%
4 Engine area, running gear, wheel area 4 11.4%
5 Undetermined 3 8.6%
6 Common room, den, family room, living room, lounge 2 5.7%
7 Function area, other 1 2.9%
8 Cooking area, kitchen 1 2.9%
9 All other areas 5 14.3%
06 What ignited it

The leading heat sources here

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

#Heat sourceCountShare 
1 Arcing 8 22.9%
2 Undetermined 6 17.1%
3 Heat from powered equipment, other 3 8.6%
4 Radiated, conducted heat from operating equipment 3 8.6%
5 Heat source: other 2 5.7%
6 Spark, ember or flame from operating equipment 2 5.7%
7 Hot or smoldering object, other 2 5.7%
8 Hot ember or ash 2 5.7%
9 All other sources 7 20.0%
07 The biggest fires

8 fires · $371K in losses

Largest single-incident losses in ZIP 03086 across 2021–2025. These 8 fires alone account for 3226% of the ZIP's 2025 reported total.

#Property lossTypeYearSeverity
1 $200,000 Building fires 2023 Significant
2 $100,000 Building fires 2023 Significant
3 $25,000 Building fires 2021 Significant
4 $13,500 Passenger vehicle fire 2024 Significant
5 $10,000 Passenger vehicle fire 2021 Significant
6 $10,000 Building fires 2025 Significant
7 $7,500 Passenger vehicle fire 2024 Significant
8 $5,000 Building fires 2021 Significant
08 Cities in this ZIP

Most active cities in ZIP 03086

Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 03086.

#City5-yr incidents 
1 Wilton 312
2 Mason 8
11 Current conditions

Right now in 03086

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 — 320 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.