ZIP 28173 recorded 219 fire and hazmat incidents in 2025, 1,045 across 2021–2025. Primary county: Union County, NC. FEMA NRI rates wildfire risk here as Moderate.
1,045 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 344 | |
| 2022 | 209 | |
| 2023 | 126 | |
| 2024 | 147 | |
| 2025 | 219 |
Mar peaks. Jul dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 28173 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 178 | 17.0% | |
| 2 | Building fires | 167 | 16.0% | |
| 3 | Authorized controlled burning | 115 | 11.0% | |
| 4 | Power line down | 93 | 8.9% | |
| 5 | Brush, or brush and grass mixture fire | 77 | 7.4% |
For the 33 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 28173 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Outside area, other | 66 | 22.4% | |
| 2 | Undetermined | 46 | 15.6% | |
| 3 | Open area - outside; included are farmland, field | 32 | 10.8% | |
| 4 | Wildland, woods | 21 | 7.1% | |
| 5 | Cooking area, kitchen | 20 | 6.8% | |
| 6 | Engine area, running gear, wheel area | 19 | 6.4% | |
| 7 | Other | 14 | 4.7% | |
| 8 | Vehicle storage area; garage, carport | 13 | 4.4% | |
| 9 | All other areas | 64 | 21.7% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 126 | 42.7% | |
| 2 | Hot ember or ash | 24 | 8.1% | |
| 3 | Arcing | 19 | 6.4% | |
| 4 | Radiated, conducted heat from operating equipment | 17 | 5.8% | |
| 5 | Hot or smoldering object, other | 15 | 5.1% | |
| 6 | Heat source: other | 14 | 4.7% | |
| 7 | Heat from powered equipment, other | 13 | 4.4% | |
| 8 | Cigarette lighter | 11 | 3.7% | |
| 9 | All other sources | 56 | 19.0% |
Largest single-incident losses in ZIP 28173 across 2021–2025. These 8 fires alone account for 634% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $2,713,300 | Building fires | 2024 | Major |
| 2 | $730,000 | Building fires | 2023 | Major |
| 3 | $455,100 | Building fires | 2023 | Major |
| 4 | $300,000 | Off-road vehicle or heavy equipment fire | 2021 | Major |
| 5 | $300,000 | Building fires | 2023 | Major |
| 6 | $250,000 | Building fires | 2025 | Major |
| 7 | $205,000 | Building fires | 2021 | Significant |
| 8 | $204,800 | Building fires | 2025 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 28173.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Waxhaw | 649 | |
| 2 | Marvin | 80 | |
| 3 | Wesley Chapel | 65 | |
| 4 | Weddington | 35 | |
| 5 | Mineral Springs | 14 |
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 — 1,045 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.