ZIP 51237 is served primarily by Lyon County, IA — including Rock Rapids. ZIP-level data is sparse — showing the Lyon County aggregate.
Apr peaks. Aug dips. ZIP-level seasonality is sparse — this is the county aggregate.
Top 5 NFIRS incident types — county-level breakdown.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Outside rubbish, trash or waste fire | 7 | 18.9% | |
| 2 | Natural vegetation fire, other | 5 | 13.5% | |
| 3 | Brush, or brush and grass mixture fire | 4 | 10.8% | |
| 4 | Fire, other | 3 | 8.1% | |
| 5 | Passenger vehicle fire | 2 | 5.4% |
5 cities sit in Lyon County. Click for the per-city NFIRS profile.
| # | City | Population | 2025 incidents | Building fires | Grade |
|---|---|---|---|---|---|
| 1 | Rock Rapids | 2,631 | 0 | 0 | A+ |
| 2 | George | 1,149 | 0 | 0 | A+ |
| 3 | Larchwood | 993 | 20 | 0 | B+ |
| 4 | Inwood | 879 | 8 | 0 | A- |
| 5 | Doon | 575 | 3 | 0 | 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 Lyon 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.