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ZIP-level NFIRS data

Fires in ZIP 20164

ZIP 20164 recorded 103 fire and hazmat incidents in 2025, 564 across 2021–2025. Primary county: Loudoun County, VA.

ZIP 20164 FIPS 51107 ZIP-level
Total incidents (2025)
103
564 across 5 years
Building fires
10
5 wildland
Wildfire risk
37
FEMA NRI · Low
Active fires
0
in Loudoun County
01 Five-year trend

Year over year in ZIP 20164

564 incidents from 2021 through 2025 inside this ZIP.

YearIncidents 
2021 80
2022 91
2023 130
2024 160
2025 103
02 Seasonality

When do fires happen in ZIP 20164?

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

Jan 50
Feb 41
Mar 63
Apr 51
May 46
Jun 45
Jul 48
Aug 44
Sep 48
Oct 52
Nov 41
Dec 35
03 Top incident types

What kinds of calls lead in ZIP 20164?

Top 5 NFIRS incident types for ZIP 20164 across 2021–2025.

#Incident typeCountShare 
1 Gas leak (natural gas or LPG) 113 20.0%
2 Hazardous condition, other 58 10.3%
3 Building fires 47 8.3%
4 Cooking fire, confined to container 28 5.0%
5 Vehicle accident, general cleanup 25 4.4%
04 Cause of ignition

What sparks fires in ZIP 20164?

For the 10 building fires reported here in 2025, here's how investigators classified ignition cause.

Unintentional
60%
69
Cause undetermined
11%
13
Intentional / arson
6%
7
Equipment / heat source failure
8%
9
Under investigation
11%
13
Act of nature (lightning)
4%
4
05 Where fires start

Where in the building fires start

NFIRS Area of Origin for ZIP 20164 fires across 2021–2025.

#Area of originCountShare 
1 Undetermined 31 27.0%
2 Outside area, other 17 14.8%
3 Engine area, running gear, wheel area 10 8.7%
4 Open area - outside; included are farmland, field 6 5.2%
5 Storage area, other 5 4.3%
6 Other 4 3.5%
7 Common room, den, family room, living room, lounge 3 2.6%
8 Bedroom - < 5 persons; included are jail or prison 3 2.6%
9 All other areas 36 31.3%
06 What ignited it

The leading heat sources here

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

#Heat sourceCountShare 
1 Undetermined 60 52.2%
2 Arcing 15 13.0%
3 Heat from powered equipment, other 8 7.0%
4 Cigarette 5 4.3%
5 Heat source: other 4 3.5%
6 Hot or smoldering object, other 4 3.5%
7 Heat, spark from friction 4 3.5%
8 Spark, ember or flame from operating equipment 3 2.6%
9 All other sources 12 10.4%
07 The biggest fires

8 fires · $3.3M in losses

Largest single-incident losses in ZIP 20164 across 2021–2025. These 8 fires alone account for 3144% of the ZIP's 2025 reported total.

#Property lossTypeYearSeverity
1 $2,000,000 Building fires 2021 Major
2 $351,200 Building fires 2023 Major
3 $269,500 Building fires 2024 Major
4 $191,000 Building fires 2022 Significant
5 $180,000 Building fires 2021 Significant
6 $108,900 Building fires 2024 Significant
7 $93,750 Building fires 2021 Significant
8 $75,000 Fire, other 2024 Significant
08 Cities in this ZIP

Most active cities in ZIP 20164

Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 20164.

#City5-yr incidents 
1 Sterling 540
2 Daniels 1
11 Current conditions

Right now in 20164

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 — 564 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.