ZIP 18103 recorded 148 fire and hazmat incidents in 2025, 1,820 across 2021–2025. Primary county: Lehigh County, PA.
1,820 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 412 | |
| 2022 | 417 | |
| 2023 | 453 | |
| 2024 | 390 | |
| 2025 | 148 |
Aug peaks. Oct dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 18103 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 296 | 16.3% | |
| 2 | Power line down | 231 | 12.7% | |
| 3 | Gas leak (natural gas or LPG) | 161 | 8.8% | |
| 4 | Electrical wiring/equipment problem, other | 98 | 5.4% | |
| 5 | Unauthorized burning | 97 | 5.3% |
For the 31 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 18103 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Outside area, other | 97 | 20.5% | |
| 2 | Cooking area, kitchen | 96 | 20.3% | |
| 3 | Undetermined | 61 | 12.9% | |
| 4 | Engine area, running gear, wheel area | 49 | 10.3% | |
| 5 | Highway, parking lot, street: on or near | 13 | 2.7% | |
| 6 | Open area - outside; included are farmland, field | 13 | 2.7% | |
| 7 | Vehicle area, other | 12 | 2.5% | |
| 8 | Bedroom - < 5 persons; included are jail or prison | 10 | 2.1% | |
| 9 | All other areas | 123 | 25.9% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 265 | 55.9% | |
| 2 | Radiated, conducted heat from operating equipment | 57 | 12.0% | |
| 3 | Heat from powered equipment, other | 28 | 5.9% | |
| 4 | Spark, ember or flame from operating equipment | 20 | 4.2% | |
| 5 | Arcing | 17 | 3.6% | |
| 6 | Hot ember or ash | 16 | 3.4% | |
| 7 | Heat source: other | 10 | 2.1% | |
| 8 | Chemical reaction | 9 | 1.9% | |
| 9 | All other sources | 52 | 11.0% |
Largest single-incident losses in ZIP 18103 across 2021–2025. These 4 fires alone account for 0% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $6,000 | Building fires | 2021 | Significant |
| 2 | $3,500 | Passenger vehicle fire | 2021 | Significant |
| 3 | $50 | Outside equipment fire | 2022 | Significant |
| 4 | $30 | Building fires | 2024 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 18103.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Allentown | 1,114 | |
| 2 | Lower Macungie | 1 | |
| 3 | Upper Mount Bethel | 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 — 1,820 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.