ZIP 51523 is served primarily by Monona County, IA — including Onawa. ZIP-level data is sparse — showing the Monona County aggregate. FEMA NRI rates wildfire risk here as High.
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 | Brush, or brush and grass mixture fire | 14 | 25.5% | |
| 2 | Grass fire | 9 | 16.4% | |
| 3 | Passenger vehicle fire | 4 | 7.3% | |
| 4 | Off-road vehicle or heavy equipment fire | 4 | 7.3% | |
| 5 | Gas leak (natural gas or LPG) | 4 | 7.3% |
3 cities sit in Monona County. Click for the per-city NFIRS profile.
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 Monona 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.