ZIP 22066 recorded 110 fire and hazmat incidents in 2025, 442 across 2021–2025. Primary county: Fairfax County, VA.
442 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 84 | |
| 2022 | 48 | |
| 2023 | 100 | |
| 2024 | 100 | |
| 2025 | 110 |
Mar peaks. Sep dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 22066 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Power line down | 116 | 26.2% | |
| 2 | Gas leak (natural gas or LPG) | 90 | 20.4% | |
| 3 | Brush, or brush and grass mixture fire | 23 | 5.2% | |
| 4 | Special outside fire, other | 23 | 5.2% | |
| 5 | Carbon monoxide incident | 22 | 5.0% |
For the 3 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 22066 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Outside area, other | 24 | 23.3% | |
| 2 | Undetermined | 20 | 19.4% | |
| 3 | Other | 9 | 8.7% | |
| 4 | Wildland, woods | 8 | 7.8% | |
| 5 | Engine area, running gear, wheel area | 7 | 6.8% | |
| 6 | Open area - outside; included are farmland, field | 7 | 6.8% | |
| 7 | Vehicle storage area; garage, carport | 5 | 4.9% | |
| 8 | Highway, parking lot, street: on or near | 4 | 3.9% | |
| 9 | All other areas | 19 | 18.4% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 36 | 35.0% | |
| 2 | Arcing | 18 | 17.5% | |
| 3 | Hot ember or ash | 10 | 9.7% | |
| 4 | Heat source: other | 6 | 5.8% | |
| 5 | Heat from powered equipment, other | 6 | 5.8% | |
| 6 | Spark, ember or flame from operating equipment | 3 | 2.9% | |
| 7 | Radiated, conducted heat from operating equipment | 3 | 2.9% | |
| 8 | Hot or smoldering object, other | 3 | 2.9% | |
| 9 | All other sources | 18 | 17.5% |
Largest single-incident losses in ZIP 22066 across 2021–2025. These 8 fires alone account for 6212% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $388,540 | Building fires | 2023 | Major |
| 2 | $141,247 | Building fires | 2024 | Significant |
| 3 | $100,000 | Building fires | 2023 | Significant |
| 4 | $100,000 | Building fires | 2024 | Significant |
| 5 | $83,000 | Passenger vehicle fire | 2023 | Significant |
| 6 | $75,000 | Building fires | 2021 | Significant |
| 7 | $40,000 | Building fires | 2023 | Significant |
| 8 | $35,000 | Passenger vehicle fire | 2024 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 22066.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Great Falls | 125 | |
| 2 | Herndon | 7 | |
| 3 | Bethesda | 1 | |
| 4 | Potomac | 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 — 442 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.