Lassen County

County in California

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Report created October 27, 2026 at www.firezones.info/county/035/lassen

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    14% 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

    32% has burned

    Most recently the 2025 R-13 Petes Fire, which burned 6 acres here, one of 456 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    83% Elevated

    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 426,946 acres · 423,387 state, 3,559 local 14%
  2. High 541,025 acres · 527,881 state, 13,144 local 18%
  3. Moderate 125,253 acres · 99,245 state, 26,008 local 4%
  4. Non-wildland 187,255 acres · Local Responsibility Area 6%
  5. Not mapped by CAL FIRE 1,740,089 acres · Mostly federal land 58%

3,020,568 acres of land in all, 1,050,512 in the State Responsibility Area and 229,966 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. 2012 Rush Fire Of 315,512 acres in all · Cause: Lightning 271,668 acres
  2. 2021 Dixie Fire Of 963,405 acres in all · Cause: Power lines 140,433 acres
  3. 2020 W-5 Cold Springs Fire Of 84,818 acres in all · Cause: Lightning 63,695 acres
  4. 2021 Sugar Fire Of 105,004 acres in all 37,217 acres
  5. 2014 Bald Fire Of 39,752 acres in all · Cause: Lightning 25,315 acres
  6. 2020 Gold Fire 22,635 acres
  7. 2020 Sheep Fire Of 29,541 acres in all · Cause: Lightning 21,822 acres
  8. 1977 Gerigcougar Fire Cause: Lightning 21,164 acres
  9. 1987 Plumas Nf #531 (Clark) Fire Of 39,921 acres in all · Cause: Miscellaneous 20,376 acres
  10. 2017 Long Valley Fire Of 83,581 acres in all · Cause: Vehicle 20,185 acres

And 446 smaller fires. In all, 967,051 acres of Lassen 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 Lassen County

Unincorporated communities in Lassen County

ZIP codes in Lassen County

Neighboring counties

  1. Lassen County 14% Very High · this area
  2. Modoc County 11% Very High
  3. Plumas County 21% Very High
  4. Shasta County 49% Very High
  5. Sierra County 20% Very High