ZIP code 92391

San Bernardino County, including Lake Arrowhead and Crestline

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Report created October 27, 2026 at www.firezones.info/zip/92391

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    82% Very High

    All 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

    65% has burned

    Most recently the 2007 Grass Valley Fire, which burned 30 acres here, one of 6 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    100% 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 1,033 acres · State Responsibility Area 82%
  2. Not mapped by CAL FIRE 234 acres · Mostly federal land 18%

1,266 acres of land in all, 1,033 of it in the State Responsibility Area. 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

Fires that burned here

  1. 1911 Unnamed fire Of 17,062 acres in all 799 acres
  2. 1938 Unnamed fire Of 12,493 acres in all 211 acres
  3. 2003 Old Fire Of 91,428 acres in all · Cause: Arson 129 acres
  4. 2007 Grass Valley Fire Of 1,242 acres in all · Cause: Miscellaneous 30 acres
  5. 1953 Arrowhead Springs Fire Of 3,105 acres in all 4 acres
  6. 1953 Unnamed fire Of 491 acres in all 4 acres

In all, 829 acres of ZIP code 92391 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 92391

Neighboring ZIP codes

  1. 92391 82% Very High · this area
  2. 92317 77% Very High
  3. 92325 61% Very High
  4. 92345 38% Very High
  5. 92352 57% Very High
  6. 92378 40% Very High
  7. 92385 12% Very High
  8. 92404 19% Very High
  9. 92407 28% Very High