ZIP 18104 recorded 282 fire and hazmat incidents in 2025, 2,188 across 2021–2025. Primary county: Lehigh County, PA.
2,188 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 476 | |
| 2022 | 516 | |
| 2023 | 509 | |
| 2024 | 405 | |
| 2025 | 282 |
Jul peaks. Feb dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 18104 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 423 | 19.3% | |
| 2 | Gas leak (natural gas or LPG) | 224 | 10.2% | |
| 3 | Power line down | 184 | 8.4% | |
| 4 | Cooking fire, confined to container | 139 | 6.4% | |
| 5 | Carbon monoxide incident | 125 | 5.7% |
For the 73 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 18104 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Outside area, other | 99 | 20.2% | |
| 2 | Undetermined | 95 | 19.4% | |
| 3 | Cooking area, kitchen | 92 | 18.8% | |
| 4 | Engine area, running gear, wheel area | 24 | 4.9% | |
| 5 | Highway, parking lot, street: on or near | 24 | 4.9% | |
| 6 | Vehicle area, other | 21 | 4.3% | |
| 7 | Other | 19 | 3.9% | |
| 8 | Equipment or service area, other | 16 | 3.3% | |
| 9 | All other areas | 99 | 20.2% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 281 | 57.5% | |
| 2 | Radiated, conducted heat from operating equipment | 40 | 8.2% | |
| 3 | Heat from powered equipment, other | 35 | 7.2% | |
| 4 | Heat source: other | 29 | 5.9% | |
| 5 | Arcing | 16 | 3.3% | |
| 6 | Spark, ember or flame from operating equipment | 14 | 2.9% | |
| 7 | Hot or smoldering object, other | 12 | 2.5% | |
| 8 | Match | 11 | 2.2% | |
| 9 | All other sources | 51 | 10.4% |
Largest single-incident losses in ZIP 18104 across 2021–2025. These 8 fires alone account for 735784% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $200,000 | Building fires | 2023 | Significant |
| 2 | $65,000 | Building fires | 2023 | Significant |
| 3 | $64,000 | Mobile property (vehicle) fire, other | 2023 | Significant |
| 4 | $30,000 | Building fires | 2022 | Significant |
| 5 | $8,000 | Building fires | 2022 | Significant |
| 6 | $7,200 | Building fires | 2023 | Significant |
| 7 | $1,000 | Dumpster or other outside trash receptacle fire | 2022 | Significant |
| 8 | $50 | Trash or rubbish fire, contained | 2025 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 18104.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Allentown | 858 | |
| 2 | Upper Macungie | 2 | |
| 3 | South Whitehall | 1 |
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 — 2,188 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.