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ZIP-level NFIRS data

Fires in ZIP 77503

ZIP 77503 recorded 27 fire and hazmat incidents in 2025, 33 across 2021–2025. Primary county: Harris County, TX. FEMA NRI rates wildfire risk here as Very High.

ZIP 77503 FIPS 48201 ZIP-level
Total incidents (2025)
27
33 across 5 years
Building fires
1
1 wildland
Wildfire risk
85
FEMA NRI · Very High
Active fires
0
in Harris County
01 Five-year trend

Year over year in ZIP 77503

33 incidents from 2021 through 2025 inside this ZIP.

YearIncidents 
2021 0
2022 3
2023 3
2024 0
2025 27
02 Seasonality

When do fires happen in ZIP 77503?

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

Jan 0
Feb 0
Mar 2
Apr 0
May 0
Jun 4
Jul 11
Aug 0
Sep 7
Oct 2
Nov 7
Dec 0
03 Top incident types

What kinds of calls lead in ZIP 77503?

Top 5 NFIRS incident types for ZIP 77503 across 2021–2025.

#Incident typeCountShare 
1 Gas leak (natural gas or LPG) 7 21.2%
2 Dumpster or other outside trash receptacle fire 2 6.1%
3 Hazardous condition, other 2 6.1%
4 Gasoline or other flammable liquid spill 2 6.1%
5 Oil or other combustible liquid spill 2 6.1%
04 Cause of ignition

What sparks fires in ZIP 77503?

For the 1 building fires reported here in 2025, here's how investigators classified ignition cause.

Unintentional
29%
2
Cause undetermined
14%
1
Intentional / arson
14%
1
Equipment / heat source failure
0%
0
Under investigation
29%
2
Act of nature (lightning)
14%
0
05 Where fires start

Where in the building fires start

NFIRS Area of Origin for ZIP 77503 fires across 2021–2025.

#Area of originCountShare 
1 Undetermined 6 85.7%
2 Other 1 14.3%
06 What ignited it

The leading heat sources here

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

#Heat sourceCountShare 
1 Undetermined 5 71.4%
2 Hot or smoldering object, other 1 14.3%
3 Cigarette lighter 1 14.3%
08 Cities in this ZIP

Most active cities in ZIP 77503

Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 77503.

#City5-yr incidents 
1 Pasadena 32
11 Current conditions

Right now in 77503

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 — 33 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.