Napa County

County in California

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Report created October 27, 2026 at www.firezones.info/county/055/napa

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    53% Very High

    Most of the Very High land is in the State Responsibility Area, where the State Fire Marshal's zones apply.

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  • Fire history

    Share of the land inside a recorded wildfire perimeter

    64% has burned

    Most recently the 2025 Pickett Fire, which burned 6,820 acres here, one of 161 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    24% Extreme

    Utilities may shut off power in the CPUC High Fire-Threat District in fire weather, and homes outside it can lose power when their lines run through it.

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Land by hazard class

  1. Very High 271,009 acres · 265,969 state, 5,040 local 53%
  2. High 87,435 acres · 78,275 state, 9,160 local 17%
  3. Moderate 29,285 acres · 17,571 state, 11,714 local 6%
  4. Non-wildland 56,057 acres · Local Responsibility Area 11%
  5. Not mapped by CAL FIRE 63,284 acres · Mostly federal land 12%

507,070 acres of land in all, 361,816 in the State Responsibility Area and 81,971 in the Local. State zones are the ones the State Fire Marshal designated, in effect since 1 April 2024. Local zones are CAL FIRE's 2025 recommendation, which each city or county adopts by ordinance and can make stricter. How to read fire zones

Largest fires

  1. 2020 Hennessey Fire Of 305,352 acres in all · Cause: Lightning 165,387 acres
  2. 2017 Atlas Fire Of 51,625 acres in all 45,222 acres
  3. 2020 Glass Fire Of 67,484 acres in all 40,605 acres
  4. 1981 Atlas Peak Fire Cause: Arson 33,606 acres
  5. 2018 County Fire Of 89,831 acres in all 32,705 acres
  6. 2004 Rumsey Fire Of 38,763 acres in all · Cause: Arson 32,684 acres
  7. 1999 Sixteen Fire Of 37,893 acres in all · Cause: Arson 26,101 acres
  8. 1964 C. Hanly Fire Of 55,961 acres in all 22,924 acres
  9. 2017 Nuns Fire Of 55,798 acres in all 19,981 acres
  10. 1988 Miller Fire Of 34,565 acres in all · Cause: Arson 11,601 acres

And 151 smaller fires. In all, 325,464 acres of Napa County have burned. Acres are the land each fire burned here, and fires that crossed less than an acre are not counted. Some older or smaller fires may be missing, and a fire perimeter can include unburned patches. How to read fire history

Sources

Fire hazard severity zones
CAL FIRE Office of the State Fire Marshal
State map published 27 June 2025, local map 2 February 2026
Fire history
CAL FIRE Fire and Resource Assessment Program
Published 28 July 2026
Power line fire risk
California Public Utilities Commission
Published 23 February 2026

This site is independent and not affiliated with CAL FIRE or the CPUC, so for an official determination, check with the agency or your city or county. How we read the data

Nearby areas

Cities and towns in Napa County

Unincorporated communities in Napa County

ZIP codes in Napa County

Neighboring counties

  1. Napa County 53% Very High · this area
  2. Lake County 45% Very High
  3. Solano County 6% Very High
  4. Sonoma County 33% Very High
  5. Yolo County 18% Very High