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ZIP-level NFIRS data

Fires in ZIP 03257

ZIP 03257 recorded 103 fire and hazmat incidents in 2025, 486 across 2021–2025. Primary county: Merrimack County, NH.

ZIP 03257 FIPS 33013 ZIP-level
Total incidents (2025)
103
486 across 5 years
Building fires
11
3 wildland
Wildfire risk
35
FEMA NRI · Low
Active fires
0
in Merrimack County
01 Five-year trend

Year over year in ZIP 03257

486 incidents from 2021 through 2025 inside this ZIP.

YearIncidents 
2021 97
2022 72
2023 99
2024 115
2025 103
02 Seasonality

When do fires happen in ZIP 03257?

Apr peaks. May dips. Aggregated across all 5 years inside this ZIP.

Jan 36
Feb 39
Mar 63
Apr 97
May 19
Jun 27
Jul 36
Aug 33
Sep 31
Oct 22
Nov 27
Dec 56
03 Top incident types

What kinds of calls lead in ZIP 03257?

Top 5 NFIRS incident types for ZIP 03257 across 2021–2025.

#Incident typeCountShare 
1 Hazardous condition, other 141 29.0%
2 Power line down 125 25.7%
3 Gas leak (natural gas or LPG) 42 8.6%
4 Building fires 29 6.0%
5 Attempted burning, illegal action, other 29 6.0%
04 Cause of ignition

What sparks fires in ZIP 03257?

For the 11 building fires reported here in 2025, here's how investigators classified ignition cause.

Unintentional
50%
7
Cause undetermined
7%
1
Intentional / arson
7%
1
Equipment / heat source failure
21%
3
Under investigation
7%
1
Act of nature (lightning)
8%
1
05 Where fires start

Where in the building fires start

NFIRS Area of Origin for ZIP 03257 fires across 2021–2025.

#Area of originCountShare 
1 Outside area, other 4 28.6%
2 Open area - outside; included are farmland, field 3 21.4%
3 Undetermined 2 14.3%
4 Common room, den, family room, living room, lounge 1 7.1%
5 Cooking area, kitchen 1 7.1%
6 Wall surface: exterior 1 7.1%
7 Vehicle area, other 1 7.1%
8 Cargo/trunk area - all vehicles 1 7.1%
06 What ignited it

The leading heat sources here

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

#Heat sourceCountShare 
1 Undetermined 4 28.6%
2 Heat source: other 2 14.3%
3 Arcing 2 14.3%
4 Hot or smoldering object, other 2 14.3%
5 Hot ember or ash 1 7.1%
6 Flame/torch used for lighting 1 7.1%
7 Heat spread from another fire, other 1 7.1%
8 Multiple heat sources including multiple ignitions 1 7.1%
07 The biggest fires

1 fires · $500K in losses

Largest single-incident losses in ZIP 03257 across 2021–2025. These 1 fires alone account for 0% of the ZIP's 2025 reported total.

#Property lossTypeYearSeverity
1 $500,000 Building fires 2023 Major
08 Cities in this ZIP

Most active cities in ZIP 03257

Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 03257.

#City5-yr incidents 
1 New London 476
2 Sutton 5
3 Springfield 1
11 Current conditions

Right now in 03257

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 — 486 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.