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ZIP-level NFIRS data

Fires in ZIP 94542

ZIP 94542 recorded 51 fire and hazmat incidents in 2025, 152 across 2021–2025. Primary county: Alameda County, CA. FEMA NRI rates wildfire risk here as Very High.

ZIP 94542 FIPS 06001 ZIP-level
Total incidents (2025)
51
152 across 5 years
Building fires
3
6 wildland
Wildfire risk
98
FEMA NRI · Very High
Active fires
0
in Alameda County
01 Five-year trend

Year over year in ZIP 94542

152 incidents from 2021 through 2025 inside this ZIP.

YearIncidents 
2021 0
2022 32
2023 41
2024 28
2025 51
02 Seasonality

When do fires happen in ZIP 94542?

Jul peaks. Nov dips. Aggregated across all 5 years inside this ZIP.

Jan 14
Feb 11
Mar 15
Apr 12
May 14
Jun 11
Jul 16
Aug 13
Sep 16
Oct 10
Nov 7
Dec 13
03 Top incident types

What kinds of calls lead in ZIP 94542?

Top 5 NFIRS incident types for ZIP 94542 across 2021–2025.

#Incident typeCountShare 
1 Outside rubbish fire, other 21 13.8%
2 Power line down 13 8.6%
3 Fire, other 12 7.9%
4 Passenger vehicle fire 12 7.9%
5 Building fires 11 7.2%
04 Cause of ignition

What sparks fires in ZIP 94542?

For the 3 building fires reported here in 2025, here's how investigators classified ignition cause.

Unintentional
37%
19
Cause undetermined
38%
20
Intentional / arson
12%
6
Equipment / heat source failure
2%
1
Under investigation
12%
6
Act of nature (lightning)
-1%
0
05 Where fires start

Where in the building fires start

NFIRS Area of Origin for ZIP 94542 fires across 2021–2025.

#Area of originCountShare 
1 Undetermined 22 42.3%
2 Other 7 13.5%
3 Engine area, running gear, wheel area 3 5.8%
4 Outside area, other 3 5.8%
5 Highway, parking lot, street: on or near 3 5.8%
6 Vehicle storage area; garage, carport 2 3.8%
7 Cooking area, kitchen 1 1.9%
8 Bathroom, checkroom, lavatory, locker room 1 1.9%
9 All other areas 10 19.2%
06 What ignited it

The leading heat sources here

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

#Heat sourceCountShare 
1 Undetermined 38 73.1%
2 Heat source: other 5 9.6%
3 Heat from powered equipment, other 2 3.8%
4 Hot or smoldering object, other 1 1.9%
5 Hot ember or ash 1 1.9%
6 Heat from other open flame or smoking materials 1 1.9%
7 Match 1 1.9%
8 Candle 1 1.9%
9 All other sources 2 3.8%
07 The biggest fires

8 fires · $955K in losses

Largest single-incident losses in ZIP 94542 across 2021–2025. These 8 fires alone account for 702% of the ZIP's 2025 reported total.

#Property lossTypeYearSeverity
1 $600,000 Building fires 2022 Major
2 $75,000 Building fires 2024 Significant
3 $50,000 Passenger vehicle fire 2022 Significant
4 $50,000 Building fires 2022 Significant
5 $50,000 Building fires 2024 Significant
6 $50,000 Passenger vehicle fire 2025 Significant
7 $50,000 Building fires 2025 Significant
8 $30,000 Building fires 2022 Significant
08 Cities in this ZIP

Most active cities in ZIP 94542

Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 94542.

#City5-yr incidents 
1 Hayward 144
2 Fairview 1
11 Current conditions

Right now in 94542

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 — 152 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.