ZIP 85173 recorded 40 fire and hazmat incidents in 2025, 180 across 2021–2025. Primary county: Pinal County, AZ. FEMA NRI rates wildfire risk here as Very High.
180 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 29 | |
| 2022 | 30 | |
| 2023 | 38 | |
| 2024 | 43 | |
| 2025 | 40 |
Feb peaks. Mar dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 85173 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Brush, or brush and grass mixture fire | 43 | 23.9% | |
| 2 | Building fires | 23 | 12.8% | |
| 3 | Passenger vehicle fire | 20 | 11.1% | |
| 4 | Forest, woods or wildland fire | 15 | 8.3% | |
| 5 | Gas leak (natural gas or LPG) | 14 | 7.8% |
For the 4 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 85173 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Outside area, other | 27 | 20.9% | |
| 2 | Undetermined | 24 | 18.6% | |
| 3 | Engine area, running gear, wheel area | 14 | 10.9% | |
| 4 | Highway, parking lot, street: on or near | 9 | 7.0% | |
| 5 | Wildland, woods | 9 | 7.0% | |
| 6 | Vehicle area, other | 8 | 6.2% | |
| 7 | Open area - outside; included are farmland, field | 8 | 6.2% | |
| 8 | Cooking area, kitchen | 3 | 2.3% | |
| 9 | All other areas | 27 | 20.9% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 66 | 51.2% | |
| 2 | Spark, ember or flame from operating equipment | 8 | 6.2% | |
| 3 | Hot or smoldering object, other | 8 | 6.2% | |
| 4 | Heat source: other | 7 | 5.4% | |
| 5 | Hot ember or ash | 5 | 3.9% | |
| 6 | Heat from powered equipment, other | 4 | 3.1% | |
| 7 | Radiated, conducted heat from operating equipment | 4 | 3.1% | |
| 8 | Arcing | 4 | 3.1% | |
| 9 | All other sources | 23 | 17.8% |
Largest single-incident losses in ZIP 85173 across 2021–2025. These 1 fires alone account for 100% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $100 | Mobile property (vehicle) fire, other | 2025 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 85173.
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 — 180 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.