ZIP 58570 is served primarily by Morton County, ND — including Mandan. ZIP-level data is sparse — showing the Morton County aggregate. FEMA NRI rates wildfire risk here as High.
May 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 | Grass fire | 26 | 22.6% | |
| 2 | Building fires | 17 | 14.8% | |
| 3 | Passenger vehicle fire | 9 | 7.8% | |
| 4 | Gas leak (natural gas or LPG) | 8 | 7.0% | |
| 5 | Power line down | 8 | 7.0% |
4 cities sit in Morton County. Click for the per-city NFIRS profile.
| # | City | Population | 2025 incidents | Building fires | Grade |
|---|---|---|---|---|---|
| 1 | Mandan | 24,049 | 57 | 10 | B+ |
| 2 | New Salem | 939 | 16 | 3 | C+ |
| 3 | Hebron | 754 | 6 | 1 | B+ |
| 4 | Glen Ullin | 739 | 27 | 3 | C- |
Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.
| County | State | Weight | |
|---|---|---|---|
| Sioux County | ND | 1.00 | FIPS 38085 |
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 Morton 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.