ZIP 48170 recorded 298 fire and hazmat incidents in 2025, 1,803 across 2021–2025. Primary county: Washtenaw County, MI. FEMA NRI rates wildfire risk here as Moderate.
1,803 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 300 | |
| 2022 | 257 | |
| 2023 | 608 | |
| 2024 | 340 | |
| 2025 | 298 |
Aug peaks. Dec dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 48170 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Power line down | 561 | 31.1% | |
| 2 | Gas leak (natural gas or LPG) | 208 | 11.5% | |
| 3 | Building fires | 147 | 8.2% | |
| 4 | Passenger vehicle fire | 109 | 6.0% | |
| 5 | Electrical wiring/equipment problem, other | 91 | 5.0% |
For the 30 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 48170 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Engine area, running gear, wheel area | 73 | 20.2% | |
| 2 | Cooking area, kitchen | 46 | 12.7% | |
| 3 | Outside area, other | 43 | 11.9% | |
| 4 | Undetermined | 31 | 8.6% | |
| 5 | Other | 19 | 5.2% | |
| 6 | Highway, parking lot, street: on or near | 14 | 3.9% | |
| 7 | Vehicle area, other | 12 | 3.3% | |
| 8 | Cargo/trunk area - all vehicles | 11 | 3.0% | |
| 9 | All other areas | 113 | 31.2% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 128 | 35.4% | |
| 2 | Heat from powered equipment, other | 61 | 16.9% | |
| 3 | Heat source: other | 31 | 8.6% | |
| 4 | Arcing | 31 | 8.6% | |
| 5 | Radiated, conducted heat from operating equipment | 22 | 6.1% | |
| 6 | Hot or smoldering object, other | 17 | 4.7% | |
| 7 | Hot ember or ash | 11 | 3.0% | |
| 8 | Spark, ember or flame from operating equipment | 10 | 2.8% | |
| 9 | All other sources | 51 | 14.1% |
Largest single-incident losses in ZIP 48170 across 2021–2025. These 8 fires alone account for 157% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $1,000,000 | Building fires | 2025 | Major |
| 2 | $500,000 | Building fires | 2023 | Major |
| 3 | $350,000 | Building fires | 2021 | Major |
| 4 | $280,000 | Building fires | 2022 | Major |
| 5 | $250,000 | Building fires | 2023 | Major |
| 6 | $250,000 | Building fires | 2023 | Major |
| 7 | $250,000 | Passenger vehicle fire | 2024 | Major |
| 8 | $200,000 | Off-road vehicle or heavy equipment fire | 2021 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 48170.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Plymouth | 758 | |
| 2 | Northville | 2 | |
| 3 | Ann Arbor | 1 | |
| 4 | Grosse Pointe Park | 1 |
Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.
| County | State | Weight | |
|---|---|---|---|
| Wayne County | MI | 1.00 | FIPS 26163 |
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 — 1,803 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.