ZIP 20171 recorded 105 fire and hazmat incidents in 2025, 599 across 2021–2025. Primary county: Fairfax County, VA.
599 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 114 | |
| 2022 | 66 | |
| 2023 | 136 | |
| 2024 | 178 | |
| 2025 | 105 |
Mar peaks. Sep dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 20171 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 167 | 27.9% | |
| 2 | Special outside fire, other | 113 | 18.9% | |
| 3 | Building fires | 47 | 7.8% | |
| 4 | Passenger vehicle fire | 27 | 4.5% | |
| 5 | Cooking fire, confined to container | 24 | 4.0% |
For the 7 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 20171 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 51 | 21.7% | |
| 2 | Outside area, other | 50 | 21.3% | |
| 3 | Highway, parking lot, street: on or near | 26 | 11.1% | |
| 4 | Engine area, running gear, wheel area | 18 | 7.7% | |
| 5 | Cooking area, kitchen | 15 | 6.4% | |
| 6 | Exterior balcony, unenclosed porch | 11 | 4.7% | |
| 7 | Open area - outside; included are farmland, field | 10 | 4.3% | |
| 8 | Courtyard, patio, porch, terrace | 7 | 3.0% | |
| 9 | All other areas | 47 | 20.0% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 75 | 31.9% | |
| 2 | Cigarette | 40 | 17.0% | |
| 3 | Heat source: other | 18 | 7.7% | |
| 4 | Hot or smoldering object, other | 13 | 5.5% | |
| 5 | Hot ember or ash | 13 | 5.5% | |
| 6 | Radiated, conducted heat from operating equipment | 11 | 4.7% | |
| 7 | Heat from powered equipment, other | 10 | 4.3% | |
| 8 | Arcing | 8 | 3.4% | |
| 9 | All other sources | 47 | 20.0% |
Largest single-incident losses in ZIP 20171 across 2021–2025. These 8 fires alone account for 123% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $329,244 | Building fires | 2025 | Major |
| 2 | $207,410 | Building fires | 2025 | Significant |
| 3 | $170,643 | Building fires | 2025 | Significant |
| 4 | $161,700 | Building fires | 2025 | Significant |
| 5 | $150,000 | Building fires | 2021 | Significant |
| 6 | $84,982 | Building fires | 2025 | Significant |
| 7 | $83,166 | Building fires | 2023 | Significant |
| 8 | $75,000 | Building fires | 2023 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 20171.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Herndon | 592 | |
| 2 | Centreville | 1 | |
| 3 | Chantilly | 1 | |
| 4 | Sterling | 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 — 599 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.