ZIP 50611 is served primarily by Butler County, IA — including Parkersburg. ZIP-level data is sparse — showing the Butler County aggregate.
Mar peaks. Dec dips. ZIP-level seasonality is sparse — this is the county aggregate.
Top 5 NFIRS incident types — county-level breakdown.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Grass fire | 27 | 21.3% | |
| 2 | Building fires | 16 | 12.6% | |
| 3 | Brush, or brush and grass mixture fire | 15 | 11.8% | |
| 4 | Natural vegetation fire, other | 13 | 10.2% | |
| 5 | Gas leak (natural gas or LPG) | 10 | 7.9% |
8 cities sit in Butler County. Click for the per-city NFIRS profile.
| # | City | Population | 2025 incidents | Building fires | Grade |
|---|---|---|---|---|---|
| 1 | Parkersburg | 1,738 | 17 | 0 | A- |
| 2 | Shell Rock | 1,542 | 22 | 0 | B+ |
| 3 | Clarksville | 1,311 | 24 | 5 | B |
| 4 | Greene | 1,267 | 24 | 2 | C+ |
| 5 | Allison | 980 | 5 | 0 | A+ |
| 6 | Aplington | 907 | 14 | 4 | B |
| 7 | Dumont | 784 | 4 | 1 | A+ |
| 8 | New Hartford | 758 | 16 | 2 | B |
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 Butler 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.