ZIP code 92358

San Bernardino County, including Lytle Creek and Rancho Cucamonga

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Report created October 27, 2026 at www.firezones.info/zip/92358

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    7% 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

    86% has burned

    Most recently the 2024 Bridge Fire, which burned 721 acres here, one of 90 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    99% 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 3,273 acres · 2,856 state, 416 local 7%
  2. Not mapped by CAL FIRE 43,039 acres · Mostly federal land 93%

46,311 acres of land in all, 2,856 in the State Responsibility Area and 416 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. 2003 Grand Prix Fire Of 50,618 acres in all · Cause: Arson 25,457 acres
  2. 1970 Unnamed fire Of 37,472 acres in all · Cause: Miscellaneous 12,411 acres
  3. 1949 Unnamed fire 6,978 acres
  4. 2016 Blue Cut Fire Of 36,267 acres in all · Cause: Miscellaneous 3,654 acres
  5. 1968 Middle Fork Fire Of 6,468 acres in all 3,644 acres
  6. 2024 Vista Fire 2,930 acres
  7. 1936 Unnamed fire Of 4,704 acres in all 2,482 acres
  8. 1970 Unnamed fire Of 2,955 acres in all · Cause: Campfire 2,300 acres
  9. 1984 Unnamed fire 1,976 acres
  10. 1953 Unnamed fire Of 2,258 acres in all 1,888 acres

And 80 smaller fires. In all, 39,895 acres of ZIP code 92358 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 92358

Neighboring ZIP codes

  1. 92358 7% Very High · this area
  2. 91701 15% Very High
  3. 91737 57% Very High
  4. 91739 36% Very High
  5. 91759 3% Very High
  6. 91784 25% Very High
  7. 92336 11% Very High
  8. 92371 10% Very High
  9. 92377 28% High · <1% Very High
  10. 92397 16% Very High
  11. 92407 28% Very High