ZIP code 95423

Lake County, including Spring Valley and Clearlake Oaks

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Report created October 27, 2026 at www.firezones.info/zip/95423

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    51% 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

    81% has burned

    Most recently the 2024 Glenhaven Fire, which burned 416 acres here, one of 58 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    59% 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 40,573 acres · 39,759 state, 814 local 51%
  2. High 2,188 acres · 1,878 state, 310 local 3%
  3. Moderate 714 acres · 464 state, 250 local 1%
  4. Non-wildland 514 acres · Local Responsibility Area 1%
  5. Not mapped by CAL FIRE 35,797 acres · Mostly federal land 45%

79,786 acres of land in all, 42,102 in the State Responsibility Area and 1,887 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. 2018 Ranch Fire Of 410,202 acres in all · Cause: Miscellaneous 34,906 acres
  2. 1973 Barkerville Fire Of 26,428 acres in all · Cause: Miscellaneous 17,010 acres
  3. 1996 Fork Fire Of 83,057 acres in all · Cause: Arson 12,468 acres
  4. 2018 Pawnee Fire Of 15,197 acres in all · Cause: Miscellaneous 11,196 acres
  5. 1932 Long Valley Fire Cause: Miscellaneous 6,910 acres
  6. 2015 Rocky Fire Of 69,438 acres in all · Cause: Miscellaneous 6,649 acres
  7. 1951 Richard A. Kant Fire Of 6,202 acres in all 5,264 acres
  8. 1951 Howes Camp Fire Of 4,845 acres in all 4,268 acres
  9. 1934 Bartlett Springs Fire Of 3,978 acres in all · Cause: Miscellaneous 3,266 acres
  10. 2008 Walker Fire Of 11,173 acres in all · Cause: Vehicle 2,883 acres

And 48 smaller fires. In all, 64,662 acres of ZIP code 95423 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

Communities in ZIP code 95423

Neighboring ZIP codes

  1. 95423 51% Very High · this area
  2. 95422 64% Very High
  3. 95443 100% Very High
  4. 95451 74% Very High
  5. 95457 67% Very High
  6. 95458 39% Very High
  7. 95987 40% Very High