ZIP 84121 recorded 151 fire and hazmat incidents in 2025, 782 across 2021–2025. Primary county: Salt Lake County, UT. FEMA NRI rates wildfire risk here as Very High.
782 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 155 | |
| 2022 | 174 | |
| 2023 | 184 | |
| 2024 | 118 | |
| 2025 | 151 |
Jul peaks. Feb dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 84121 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 154 | 19.7% | |
| 2 | Building fires | 74 | 9.5% | |
| 3 | Power line down | 59 | 7.5% | |
| 4 | Cooking fire, confined to container | 47 | 6.0% | |
| 5 | Carbon monoxide incident | 45 | 5.8% |
For the 15 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 84121 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 31 | 17.9% | |
| 2 | Engine area, running gear, wheel area | 27 | 15.6% | |
| 3 | Other | 14 | 8.1% | |
| 4 | Outside area, other | 14 | 8.1% | |
| 5 | Cooking area, kitchen | 11 | 6.4% | |
| 6 | Exterior balcony, unenclosed porch | 7 | 4.0% | |
| 7 | Bedroom - < 5 persons; included are jail or prison | 6 | 3.5% | |
| 8 | Vehicle storage area; garage, carport | 6 | 3.5% | |
| 9 | All other areas | 57 | 32.9% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 75 | 43.4% | |
| 2 | Arcing | 17 | 9.8% | |
| 3 | Heat from powered equipment, other | 13 | 7.5% | |
| 4 | Radiated, conducted heat from operating equipment | 13 | 7.5% | |
| 5 | Heat source: other | 8 | 4.6% | |
| 6 | Heat, spark from friction | 6 | 3.5% | |
| 7 | Hot or smoldering object, other | 5 | 2.9% | |
| 8 | Fireworks | 5 | 2.9% | |
| 9 | All other sources | 31 | 17.9% |
Largest single-incident losses in ZIP 84121 across 2021–2025. These 8 fires alone account for 296% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $800,000 | Building fires | 2024 | Major |
| 2 | $300,000 | Building fires | 2024 | Major |
| 3 | $300,000 | Building fires | 2025 | Major |
| 4 | $200,000 | Camper or recreational vehicle (RV) fire | 2022 | Significant |
| 5 | $200,000 | Building fires | 2022 | Significant |
| 6 | $200,000 | Building fires | 2022 | Significant |
| 7 | $175,000 | Building fires | 2022 | Significant |
| 8 | $150,000 | Building fires | 2023 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 84121.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Murray | 145 | |
| 2 | Holladay | 112 | |
| 3 | Cottonwood Heights | 110 | |
| 4 | Salt Lake City | 14 | |
| 5 | Price | 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 — 782 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.