ZIP 57735 is served primarily by Custer County, SD — including Custer. ZIP-level data is sparse — showing the Custer County aggregate. FEMA NRI rates wildfire risk here as Very High.
Aug peaks. Mar dips. ZIP-level seasonality is sparse — this is the county aggregate.
Top 5 NFIRS incident types — county-level breakdown.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 10 | 23.8% | |
| 2 | Forest, woods or wildland fire | 10 | 23.8% | |
| 3 | Grass fire | 4 | 9.5% | |
| 4 | Brush, or brush and grass mixture fire | 3 | 7.1% | |
| 5 | Trash or rubbish fire, contained | 2 | 4.8% |
One city sit in Custer County. Click for the per-city NFIRS profile.
| # | City | Population | 2025 incidents | Building fires | Grade |
|---|---|---|---|---|---|
| 1 | Custer | 2,043 | 14 | 5 | B- |
Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.
| County | State | Weight | |
|---|---|---|---|
| Fall River County | SD | 1.00 | FIPS 46047 |
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 Custer 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.