ZIP 63121 recorded 119 fire and hazmat incidents in 2025, 776 across 2021–2025. Primary county: St. Louis County, MO. FEMA NRI rates wildfire risk here as High.
776 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 88 | |
| 2022 | 69 | |
| 2023 | 301 | |
| 2024 | 199 | |
| 2025 | 119 |
Feb peaks. Dec dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 63121 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 250 | 32.2% | |
| 2 | Gas leak (natural gas or LPG) | 76 | 9.8% | |
| 3 | Carbon monoxide incident | 61 | 7.9% | |
| 4 | Passenger vehicle fire | 50 | 6.4% | |
| 5 | Power line down | 48 | 6.2% |
For the 50 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 63121 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 31 | 19.3% | |
| 2 | Engine area, running gear, wheel area | 29 | 18.0% | |
| 3 | Cooking area, kitchen | 17 | 10.6% | |
| 4 | Other | 16 | 9.9% | |
| 5 | Outside area, other | 12 | 7.5% | |
| 6 | Open area - outside; included are farmland, field | 8 | 5.0% | |
| 7 | Function area, other | 6 | 3.7% | |
| 8 | Bedroom - < 5 persons; included are jail or prison | 4 | 2.5% | |
| 9 | All other areas | 38 | 23.6% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 97 | 60.2% | |
| 2 | Hot or smoldering object, other | 12 | 7.5% | |
| 3 | Heat from powered equipment, other | 7 | 4.3% | |
| 4 | Arcing | 7 | 4.3% | |
| 5 | Heat source: other | 6 | 3.7% | |
| 6 | Match | 5 | 3.1% | |
| 7 | Hot ember or ash | 4 | 2.5% | |
| 8 | Heat from other open flame or smoking materials | 4 | 2.5% | |
| 9 | All other sources | 19 | 11.8% |
Largest single-incident losses in ZIP 63121 across 2021–2025. These 8 fires alone account for 914% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $50,000 | Building fires | 2024 | Significant |
| 2 | $50,000 | Building fires | 2024 | Significant |
| 3 | $50,000 | Building fires | 2024 | Significant |
| 4 | $26,000 | Mobile property (vehicle) fire, other | 2024 | Significant |
| 5 | $20,000 | Building fires | 2023 | Significant |
| 6 | $20,000 | Building fires | 2023 | Significant |
| 7 | $20,000 | Fire in mobile home used as fixed residence | 2024 | Significant |
| 8 | $20,000 | Building fires | 2025 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 63121.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Pine Lawn | 142 | |
| 2 | Hillsdale | 110 | |
| 3 | Northwoods | 91 | |
| 4 | Normandy | 85 | |
| 5 | Velda City | 42 |
Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.
| County | State | Weight | |
|---|---|---|---|
| St. Louis city | MO | 0.50 | FIPS 29510 |
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 — 776 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.