Ventura County

County in California

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Report created October 27, 2026 at www.firezones.info/county/111/ventura

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    36% 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 Janss Fire, which burned 2 acres here, one of 582 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    36% 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 429,699 acres · 340,960 state, 88,739 local 36%
  2. High 29,799 acres · 12,253 state, 17,546 local 3%
  3. Moderate 14,248 acres · 1,895 state, 12,353 local 1%
  4. Non-wildland 104,715 acres · Local Responsibility Area 9%
  5. Not mapped by CAL FIRE 609,020 acres · Mostly federal land 51%

1,187,481 acres of land in all, 355,108 in the State Responsibility Area and 223,353 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. 2017 Thomas Fire Of 281,791 acres in all · Cause: Miscellaneous 234,501 acres
  2. 1932 Matilija Fire Of 219,999 acres in all · Cause: Miscellaneous 189,970 acres
  3. 2006 Day Fire Of 161,816 acres in all · Cause: Debris burning 149,001 acres
  4. 1985 Wheeler #2 Fire Of 122,687 acres in all · Cause: Miscellaneous 101,069 acres
  5. 2003 Simi Fire Of 107,570 acres in all 85,125 acres
  6. 1970 Clampitt Fire Of 115,537 acres in all · Cause: Power lines 73,466 acres
  7. 2003 Piru Fire Cause: Equipment use 63,716 acres
  8. 1985 Ferndale Fire Cause: Arson 46,800 acres
  9. 1917 Unnamed fire Cause: Miscellaneous 43,892 acres
  10. 1993 Green Meadows Fire Of 38,479 acres in all 36,117 acres

And 572 smaller fires. In all, 763,762 acres of Ventura 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 Ventura County

Unincorporated communities in Ventura County

ZIP codes in Ventura County

Neighboring counties

  1. Ventura County 36% Very High · this area
  2. Kern County 12% Very High
  3. Los Angeles County 29% Very High
  4. Santa Barbara County 29% Very High