Sonoma County

County in California

Search for an address

Report created October 27, 2026 at www.firezones.info/county/097/sonoma

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    33% Very High

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

    Open map

  • Fire history

    Share of the land inside a recorded wildfire perimeter

    34% has burned

    Most recently the 2024 Point Fire, which burned 1,205 acres here, one of 188 fires on record.

    Open map

  • Power line fire risk

    Share of the land in the High Fire-Threat District

    29% 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.

    Open map

Land by hazard class

  1. Very High 333,927 acres · 324,599 state, 9,327 local 33%
  2. High 286,780 acres · 273,182 state, 13,597 local 28%
  3. Moderate 254,971 acres · 196,029 state, 58,942 local 25%
  4. Non-wildland 108,696 acres · Local Responsibility Area 11%
  5. Not mapped by CAL FIRE 32,237 acres · Mostly federal land 3%

1,016,609 acres of land in all, 793,810 in the State Responsibility Area and 190,562 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. 2019 Kincade Fire Cause: Power lines 77,236 acres
  2. 2020 Walbridge Fire Cause: Lightning 55,209 acres
  3. 2017 Nuns Fire Of 55,798 acres in all 35,818 acres
  4. 1964 C. Hanly Fire Of 55,961 acres in all 33,036 acres
  5. 2017 Tubbs Fire Of 36,702 acres in all 31,920 acres
  6. 2020 Glass Fire Of 67,484 acres in all 26,876 acres
  7. 2017 Pocket Fire 17,351 acres
  8. 1965 P.g.& E.#10 Fire 13,172 acres
  9. 2004 Geysers Fire Of 12,244 acres in all · Cause: Equipment use 11,616 acres
  10. 1988 Unnamed fire 11,380 acres

And 178 smaller fires. In all, 345,766 acres of Sonoma 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 Sonoma County

Unincorporated communities in Sonoma County

ZIP codes in Sonoma County

Neighboring counties

  1. Sonoma County 33% Very High · this area
  2. Lake County 45% Very High
  3. Marin County 8% Very High
  4. Mendocino County 36% Very High
  5. Napa County 53% Very High
  6. Solano County 6% Very High