ZIP code 92320

Riverside County, including Calimesa

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Report created October 27, 2026 at www.firezones.info/zip/92320

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    83% Very High

    Most of the Very High land is in the Local Responsibility Area, where each city or county adopts the zones CAL FIRE recommends.

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  • Fire history

    Share of the land inside a recorded wildfire perimeter

    67% has burned

    Most recently the 2019 Sandalwood Fire, which burned 879 acres here, one of 20 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    78% 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 7,447 acres · 103 state, 7,344 local 83%
  2. High 351 acres · Local Responsibility Area 4%
  3. Moderate 242 acres · Local Responsibility Area 3%
  4. Non-wildland 886 acres · Local Responsibility Area 10%

8,926 acres of land in all, 103 in the State Responsibility Area and 8,823 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. 1970 Casco #2 Fire Of 6,234 acres in all 2,109 acres
  2. 1998 Taylor Fire Of 2,056 acres in all · Cause: Equipment use 1,245 acres
  3. 2017 Palmer Fire Of 3,872 acres in all · Cause: Miscellaneous 1,211 acres
  4. 2019 Sandalwood Fire Of 1,008 acres in all 879 acres
  5. 1957 Lann Fire Of 947 acres in all 846 acres
  6. 1962 Unnamed fire 810 acres
  7. 1988 Unnamed fire Of 1,043 acres in all 801 acres
  8. 1980 Treemont Fire 444 acres
  9. 1997 Calimesa Fire Cause: Equipment use 423 acres
  10. 1980 Link Fire Of 924 acres in all 236 acres

And 10 smaller fires. In all, 5,975 acres of ZIP code 92320 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 92320

Neighboring ZIP codes

  1. 92320 83% Very High · this area
  2. 92223 60% Very High
  3. 92373 78% Very High
  4. 92399 58% Very High