ZIP 20121 recorded 79 fire and hazmat incidents in 2025, 382 across 2021–2025. Primary county: Fairfax County, VA.
382 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 53 | |
| 2022 | 62 | |
| 2023 | 88 | |
| 2024 | 100 | |
| 2025 | 79 |
Mar peaks. Sep dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 20121 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 98 | 25.7% | |
| 2 | Passenger vehicle fire | 46 | 12.0% | |
| 3 | Building fires | 42 | 11.0% | |
| 4 | Brush, or brush and grass mixture fire | 21 | 5.5% | |
| 5 | Special outside fire, other | 19 | 5.0% |
For the 5 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 20121 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 24 | 20.0% | |
| 2 | Engine area, running gear, wheel area | 21 | 17.5% | |
| 3 | Outside area, other | 16 | 13.3% | |
| 4 | Operator/passenger area of transportation equip. | 8 | 6.7% | |
| 5 | Cooking area, kitchen | 6 | 5.0% | |
| 6 | Highway, parking lot, street: on or near | 6 | 5.0% | |
| 7 | Vehicle area, other | 5 | 4.2% | |
| 8 | Bedroom - < 5 persons; included are jail or prison | 4 | 3.3% | |
| 9 | All other areas | 30 | 25.0% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 44 | 36.7% | |
| 2 | Heat from powered equipment, other | 15 | 12.5% | |
| 3 | Cigarette | 13 | 10.8% | |
| 4 | Heat source: other | 7 | 5.8% | |
| 5 | Spark, ember or flame from operating equipment | 7 | 5.8% | |
| 6 | Arcing | 7 | 5.8% | |
| 7 | Heat from other open flame or smoking materials | 7 | 5.8% | |
| 8 | Hot ember or ash | 6 | 5.0% | |
| 9 | All other sources | 14 | 11.7% |
Largest single-incident losses in ZIP 20121 across 2021–2025. These 8 fires alone account for 241% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $150,000 | Building fires | 2021 | Significant |
| 2 | $150,000 | Building fires | 2025 | Significant |
| 3 | $125,000 | Building fires | 2021 | Significant |
| 4 | $123,382 | Building fires | 2024 | Significant |
| 5 | $75,000 | Building fires | 2025 | Significant |
| 6 | $75,000 | Fire, other | 2025 | Significant |
| 7 | $65,382 | Building fires | 2023 | Significant |
| 8 | $57,483 | Building fires | 2024 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 20121.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Centreville | 283 | |
| 2 | Manassas | 3 |
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 — 382 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.