ZIP 58121 is served primarily by Cass County, ND — including Fargo. ZIP-level data is sparse — showing the Cass County aggregate. FEMA NRI rates wildfire risk here as Moderate.
Aug peaks. Nov dips. ZIP-level seasonality is sparse — this is the county aggregate.
Top 5 NFIRS incident types — county-level breakdown.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Vehicle accident, general cleanup | 274 | 28.5% | |
| 2 | Gas leak (natural gas or LPG) | 109 | 11.3% | |
| 3 | Building fires | 100 | 10.4% | |
| 4 | Carbon monoxide incident | 49 | 5.1% | |
| 5 | Passenger vehicle fire | 47 | 4.9% |
9 cities sit in Cass County. Click for the per-city NFIRS profile.
| # | City | Population | 2025 incidents | Building fires | Grade |
|---|---|---|---|---|---|
| 1 | Fargo | 127,319 | 728 | 75 | A- |
| 2 | West Fargo | 38,653 | 108 | 13 | A+ |
| 3 | Horace | 3,464 | 40 | 7 | B+ |
| 4 | Casselton | 2,496 | 16 | 1 | A- |
| 5 | Mapleton | 1,151 | 9 | 0 | B+ |
| 6 | Kindred | 957 | 5 | 1 | B- |
| 7 | Reile's Acres | 914 | 0 | 0 | — |
| 8 | Harwood | 759 | 1 | 0 | B- |
| 9 | Argusville | 573 | 3 | 0 | 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 Cass 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.