ZIP code 92539

Riverside County, including Anza

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Report created October 27, 2026 at www.firezones.info/zip/92539

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    61% 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

    33% has burned

    Most recently the 2025 Dale Fire, which burned 988 acres here, one of 46 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    6% 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 50,468 acres · State Responsibility Area 61%
  2. High 1,103 acres · State Responsibility Area 1%
  3. Moderate 1,350 acres · State Responsibility Area 2%
  4. Not mapped by CAL FIRE 30,476 acres · Mostly federal land 37%

83,396 acres of land in all, 52,920 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

Largest fires

  1. 1944 Unnamed fire Of 58,790 acres in all 9,555 acres
  2. 1994 Bailey Fire Of 7,084 acres in all 5,450 acres
  3. 1928 Unnamed fire Of 60,175 acres in all 3,241 acres
  4. 1993 Tribal Fire Of 2,199 acres in all · Cause: Equipment use 1,963 acres
  5. 1956 Unnamed fire Of 1,828 acres in all 1,616 acres
  6. 1941 Unnamed fire Of 1,505 acres in all 1,042 acres
  7. 2023 Bonny Fire Of 2,323 acres in all 1,012 acres
  8. 2025 Dale Fire Of 1,039 acres in all 988 acres
  9. 1941 Unnamed fire 649 acres
  10. 1926 Unnamed fire Of 603 acres in all 529 acres

And 36 smaller fires. In all, 27,627 acres of ZIP code 92539 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 92539

Neighboring ZIP codes

  1. 92539 61% Very High · this area
  2. 92004 9% Very High
  3. 92086 39% Very High
  4. 92536 64% Very High
  5. 92544 55% Very High
  6. 92561 15% Very High