ZIP 85203 recorded 139 fire and hazmat incidents in 2025, 625 across 2021–2025. Primary county: Maricopa County, AZ. FEMA NRI rates wildfire risk here as Very High.
625 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 111 | |
| 2022 | 127 | |
| 2023 | 122 | |
| 2024 | 126 | |
| 2025 | 139 |
Jul peaks. Feb dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 85203 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 101 | 16.2% | |
| 2 | Dumpster or other outside trash receptacle fire | 74 | 11.8% | |
| 3 | Outside rubbish fire, other | 63 | 10.1% | |
| 4 | Gas leak (natural gas or LPG) | 57 | 9.1% | |
| 5 | Outside rubbish, trash or waste fire | 49 | 7.8% |
For the 27 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 85203 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Engine area, running gear, wheel area | 23 | 14.4% | |
| 2 | Undetermined | 21 | 13.1% | |
| 3 | Cooking area, kitchen | 15 | 9.4% | |
| 4 | Vehicle area, other | 13 | 8.1% | |
| 5 | Laundry area, wash house (laundry) | 8 | 5.0% | |
| 6 | Bathroom, checkroom, lavatory, locker room | 7 | 4.4% | |
| 7 | Cargo/trunk area - all vehicles | 6 | 3.8% | |
| 8 | Storage area, other | 5 | 3.1% | |
| 9 | All other areas | 62 | 38.8% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 68 | 42.5% | |
| 2 | Heat from powered equipment, other | 30 | 18.8% | |
| 3 | Heat source: other | 16 | 10.0% | |
| 4 | Arcing | 14 | 8.8% | |
| 5 | Hot or smoldering object, other | 6 | 3.8% | |
| 6 | Spark, ember or flame from operating equipment | 5 | 3.1% | |
| 7 | Hot ember or ash | 4 | 2.5% | |
| 8 | Radiated, conducted heat from operating equipment | 3 | 1.9% | |
| 9 | All other sources | 14 | 8.8% |
Largest single-incident losses in ZIP 85203 across 2021–2025. These 8 fires alone account for 353% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $663,984 | Building fires | 2024 | Major |
| 2 | $486,000 | Building fires | 2021 | Major |
| 3 | $450,000 | Building fires | 2023 | Major |
| 4 | $450,000 | Building fires | 2025 | Major |
| 5 | $365,650 | Building fires | 2021 | Major |
| 6 | $300,000 | Building fires | 2024 | Major |
| 7 | $232,500 | Building fires | 2023 | Significant |
| 8 | $150,000 | Building fires | 2025 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 85203.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Mesa | 625 |
The figures above are historical. For today's air quality, fire-weather warnings, and active fires, go to the official sources.
NFIRS reports each fire incident with a 5-digit address ZIP. We aggregate those rows directly to produce ZIP-level totals — 625 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.