ZIP 94581 is served primarily by Napa County, CA — including Napa. ZIP-level data is sparse — showing the Napa County aggregate. FEMA NRI rates wildfire risk here as Very High.
Aug peaks. Jun dips. ZIP-level seasonality is sparse — this is the county aggregate.
Top 5 NFIRS incident types — county-level breakdown.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 100 | 11.1% | |
| 2 | Power line down | 80 | 8.9% | |
| 3 | Electrical wiring/equipment problem, other | 67 | 7.5% | |
| 4 | Hazardous condition, other | 56 | 6.2% | |
| 5 | Grass fire | 53 | 5.9% |
8 cities sit in Napa County. Click for the per-city NFIRS profile.
| # | City | Population | 2025 incidents | Building fires | Grade |
|---|---|---|---|---|---|
| 1 | Napa | 79,233 | 430 | 21 | A |
| 2 | American Canyon | 21,669 | 75 | 5 | A+ |
| 3 | St. Helena | 5,426 | 0 | 0 | — |
| 4 | Calistoga | 5,191 | 108 | 4 | C+ |
| 5 | Yountville | 3,397 | 38 | 3 | B- |
| 6 | Angwin | 2,731 | 14 | 0 | A- |
| 7 | Silverado Resort | 1,012 | 0 | 0 | — |
| 8 | Deer Park | 835 | 0 | 0 | A+ |
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 Napa 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.