ZIP 49903 is served primarily by Iron County, MI — including Iron River. ZIP-level data is sparse — showing the Iron County aggregate. FEMA NRI rates wildfire risk here as Moderate.
Mar peaks. Oct dips. ZIP-level seasonality is sparse — this is the county aggregate.
Top 5 NFIRS incident types — county-level breakdown.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 10 | 20.4% | |
| 2 | Building fires | 6 | 12.2% | |
| 3 | Power line down | 6 | 12.2% | |
| 4 | Brush, or brush and grass mixture fire | 5 | 10.2% | |
| 5 | Passenger vehicle fire | 3 | 6.1% |
3 cities sit in Iron County. Click for the per-city NFIRS profile.
| # | City | Population | 2025 incidents | Building fires | Grade |
|---|---|---|---|---|---|
| 1 | Iron River | 2,995 | 39 | 1 | B |
| 2 | Crystal Falls | 1,773 | 7 | 3 | B |
| 3 | Caspian | 611 | 2 | 1 | A |
The figures above are historical. For today's air quality, fire-weather warnings, and active fires, go to the official sources.
This ZIP doesn't have enough NFIRS coverage on its own (under 10 reported incidents across 2021–2025) to publish ZIP-level statistics, so we're showing the Iron County aggregate above. NFIRS reporting is voluntary and many rural ZIPs roll up to broader county totals. The ZIP-to-county mapping uses SimpleMaps' uscities.zips dataset.