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ZIP-level NFIRS data

Fires in ZIP 01434

ZIP 01434 recorded 46 fire and hazmat incidents in 2025, 295 across 2021–2025. Primary county: Middlesex County, MA. FEMA NRI rates wildfire risk here as High.

ZIP 01434 FIPS 25017 ZIP-level 2 counties
Total incidents (2025)
46
295 across 5 years
Building fires
0
18 wildland
Wildfire risk
73
FEMA NRI · High
Active fires
0
in Middlesex County
01 Five-year trend

Year over year in ZIP 01434

295 incidents from 2021 through 2025 inside this ZIP.

YearIncidents 
2021 81
2022 59
2023 55
2024 54
2025 46
02 Seasonality

When do fires happen in ZIP 01434?

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

Jan 20
Feb 10
Mar 27
Apr 46
May 49
Jun 33
Jul 29
Aug 21
Sep 17
Oct 12
Nov 21
Dec 10
03 Top incident types

What kinds of calls lead in ZIP 01434?

Top 5 NFIRS incident types for ZIP 01434 across 2021–2025.

#Incident typeCountShare 
1 Brush, or brush and grass mixture fire 62 21.0%
2 Gas leak (natural gas or LPG) 53 18.0%
3 Natural vegetation fire, other 31 10.5%
4 Building fires 19 6.4%
5 Explosive, bomb removal (for bomb scare, use 721) 15 5.1%
04 Cause of ignition

What sparks fires in ZIP 01434?

For the 0 building fires reported here in 2025, here's how investigators classified ignition cause.

Unintentional
45%
42
Cause undetermined
40%
38
Intentional / arson
4%
4
Equipment / heat source failure
4%
4
Under investigation
1%
1
Act of nature (lightning)
6%
2
05 Where fires start

Where in the building fires start

NFIRS Area of Origin for ZIP 01434 fires across 2021–2025.

#Area of originCountShare 
1 Highway, parking lot, street: on or near 46 48.9%
2 Other 12 12.8%
3 Undetermined 8 8.5%
4 Outside area, other 6 6.4%
5 Cooking area, kitchen 3 3.2%
6 Chute/container - trash, rubbish, waste 2 2.1%
7 Conveyor 2 2.1%
8 Operator/passenger area of transportation equip. 2 2.1%
9 All other areas 13 13.8%
06 What ignited it

The leading heat sources here

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

#Heat sourceCountShare 
1 Cigarette 51 54.3%
2 Undetermined 13 13.8%
3 Heat from powered equipment, other 5 5.3%
4 Radiated, conducted heat from operating equipment 4 4.3%
5 Heat from undetermined smoking material 3 3.2%
6 Cigarette lighter 3 3.2%
7 Sunlight 3 3.2%
8 Spark, ember or flame from operating equipment 2 2.1%
9 All other sources 10 10.6%
07 The biggest fires

8 fires · $724K in losses

Largest single-incident losses in ZIP 01434 across 2021–2025. These 8 fires alone account for 72400% of the ZIP's 2025 reported total.

#Property lossTypeYearSeverity
1 $500,000 Building fires 2021 Major
2 $50,000 Passenger vehicle fire 2023 Significant
3 $50,000 Building fires 2024 Significant
4 $40,000 Passenger vehicle fire 2023 Significant
5 $25,000 Building fires 2022 Significant
6 $25,000 Passenger vehicle fire 2023 Significant
7 $19,000 Passenger vehicle fire 2023 Significant
8 $15,000 Building fires 2021 Significant
08 Cities in this ZIP

Most active cities in ZIP 01434

Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 01434.

#City5-yr incidents 
1 Devens 293
2 Ayer 1
10 Also served by

ZIP 01434 crosses 2 counties

Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.

CountyStateWeight 
Worcester County MA 1.00 FIPS 25027
11 Current conditions

Right now in 01434

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 — 295 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.