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ZIP-level NFIRS data

Fires in ZIP 03221

ZIP 03221 recorded 46 fire and hazmat incidents in 2025, 187 across 2021–2025. Primary county: Merrimack County, NH.

ZIP 03221 FIPS 33013 ZIP-level
Total incidents (2025)
46
187 across 5 years
Building fires
15
12 wildland
Wildfire risk
35
FEMA NRI · Low
Active fires
0
in Merrimack County
01 Five-year trend

Year over year in ZIP 03221

187 incidents from 2021 through 2025 inside this ZIP.

YearIncidents 
2021 35
2022 30
2023 23
2024 53
2025 46
02 Seasonality

When do fires happen in ZIP 03221?

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

Jan 11
Feb 20
Mar 32
Apr 18
May 23
Jun 15
Jul 17
Aug 14
Sep 10
Oct 5
Nov 7
Dec 15
03 Top incident types

What kinds of calls lead in ZIP 03221?

Top 5 NFIRS incident types for ZIP 03221 across 2021–2025.

#Incident typeCountShare 
1 Building fires 56 29.9%
2 Power line down 38 20.3%
3 Brush, or brush and grass mixture fire 17 9.1%
4 Unauthorized burning 11 5.9%
5 Gas leak (natural gas or LPG) 9 4.8%
04 Cause of ignition

What sparks fires in ZIP 03221?

For the 15 building fires reported here in 2025, here's how investigators classified ignition cause.

Unintentional
25%
7
Cause undetermined
29%
8
Intentional / arson
14%
4
Equipment / heat source failure
11%
3
Under investigation
18%
5
Act of nature (lightning)
3%
1
05 Where fires start

Where in the building fires start

NFIRS Area of Origin for ZIP 03221 fires across 2021–2025.

#Area of originCountShare 
1 Undetermined 8 28.6%
2 Outside area, other 4 14.3%
3 Wildland, woods 4 14.3%
4 Common room, den, family room, living room, lounge 2 7.1%
5 Substructure area or space, crawl space 2 7.1%
6 Other 1 3.6%
7 Cooking area, kitchen 1 3.6%
8 Vehicle storage area; garage, carport 1 3.6%
9 All other areas 5 17.9%
06 What ignited it

The leading heat sources here

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

#Heat sourceCountShare 
1 Undetermined 13 46.4%
2 Hot ember or ash 3 10.7%
3 Arcing 2 7.1%
4 Hot or smoldering object, other 2 7.1%
5 Heat source: other 1 3.6%
6 Heat from powered equipment, other 1 3.6%
7 Heat from undetermined smoking material 1 3.6%
8 Match 1 3.6%
9 All other sources 4 14.3%
07 The biggest fires

7 fires · $1.4M in losses

Largest single-incident losses in ZIP 03221 across 2021–2025. These 7 fires alone account for 622% of the ZIP's 2025 reported total.

#Property lossTypeYearSeverity
1 $750,000 Road freight or transport vehicle fire 2023 Major
2 $248,800 Building fires 2024 Significant
3 $200,000 Building fires 2025 Significant
4 $178,000 Building fires 2024 Significant
5 $25,000 Building fires 2025 Significant
6 $500 Dumpster or other outside trash receptacle fire 2025 Significant
7 $250 Building fires 2024 Significant
08 Cities in this ZIP

Most active cities in ZIP 03221

Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 03221.

#City5-yr incidents 
1 Bradford 162
2 Sutton 21
3 Barnstead 2
4 Hillsborough 1
5 Warner 1
11 Current conditions

Right now in 03221

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 — 187 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.