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ZIP-level NFIRS data

Fires in ZIP 01603

ZIP 01603 recorded 144 fire and hazmat incidents in 2025, 1,093 across 2021–2025. Primary county: Worcester County, MA. FEMA NRI rates wildfire risk here as High.

ZIP 01603 FIPS 25027 ZIP-level
Total incidents (2025)
144
1,093 across 5 years
Building fires
4
7 wildland
Wildfire risk
63
FEMA NRI · High
Active fires
0
in Worcester County
01 Five-year trend

Year over year in ZIP 01603

1,093 incidents from 2021 through 2025 inside this ZIP.

YearIncidents 
2021 240
2022 252
2023 244
2024 213
2025 144
02 Seasonality

When do fires happen in ZIP 01603?

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

Jan 69
Feb 77
Mar 86
Apr 89
May 99
Jun 92
Jul 92
Aug 121
Sep 101
Oct 91
Nov 104
Dec 72
03 Top incident types

What kinds of calls lead in ZIP 01603?

Top 5 NFIRS incident types for ZIP 01603 across 2021–2025.

#Incident typeCountShare 
1 Cooking fire, confined to container 238 21.8%
2 Outside rubbish, trash or waste fire 133 12.2%
3 Gas leak (natural gas or LPG) 133 12.2%
4 Hazardous condition, other 122 11.2%
5 Power line down 67 6.1%
04 Cause of ignition

What sparks fires in ZIP 01603?

For the 4 building fires reported here in 2025, here's how investigators classified ignition cause.

Unintentional
74%
156
Cause undetermined
11%
23
Intentional / arson
5%
10
Equipment / heat source failure
6%
12
Under investigation
2%
5
Act of nature (lightning)
2%
4
05 Where fires start

Where in the building fires start

NFIRS Area of Origin for ZIP 01603 fires across 2021–2025.

#Area of originCountShare 
1 Outside area, other 44 20.9%
2 Highway, parking lot, street: on or near 24 11.4%
3 Wildland, woods 16 7.6%
4 Engine area, running gear, wheel area 15 7.1%
5 Laundry area, wash house (laundry) 13 6.2%
6 Undetermined 12 5.7%
7 Open area - outside; included are farmland, field 10 4.7%
8 Cooking area, kitchen 9 4.3%
9 All other areas 68 32.2%
06 What ignited it

The leading heat sources here

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

#Heat sourceCountShare 
1 Undetermined 78 37.0%
2 Hot or smoldering object, other 29 13.7%
3 Heat source: other 17 8.1%
4 Radiated, conducted heat from operating equipment 15 7.1%
5 Heat from powered equipment, other 14 6.6%
6 Hot ember or ash 14 6.6%
7 Cigarette 14 6.6%
8 Cigarette lighter 6 2.8%
9 All other sources 24 11.4%
07 The biggest fires

8 fires · $3.0M in losses

Largest single-incident losses in ZIP 01603 across 2021–2025. These 8 fires alone account for 337% of the ZIP's 2025 reported total.

#Property lossTypeYearSeverity
1 $980,000 Building fires 2022 Major
2 $650,300 Building fires 2025 Major
3 $396,514 Building fires 2022 Major
4 $353,000 Building fires 2021 Major
5 $185,000 Building fires 2021 Significant
6 $170,000 Fire, other 2025 Significant
7 $125,000 Building fires 2023 Significant
8 $100,000 Building fires 2023 Significant
08 Cities in this ZIP

Most active cities in ZIP 01603

Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 01603.

#City5-yr incidents 
1 Worcester 1,092
11 Current conditions

Right now in 01603

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 — 1,093 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.