ZIP code 92557

Riverside County, including Moreno Valley and Highgrove

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Report created October 27, 2026 at www.firezones.info/zip/92557

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    67% 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

    60% has burned

    Most recently the 2023 Reche Fire, which burned 54 acres here, one of 52 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    36% 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 7,604 acres · 4,843 state, 2,761 local 67%
  2. High 564 acres · 55 state, 509 local 5%
  3. Moderate 438 acres · Local Responsibility Area 4%
  4. Non-wildland 2,790 acres · Local Responsibility Area 24%
  5. Not mapped by CAL FIRE 7 acres · Mostly federal land <1%

11,403 acres of land in all, 4,898 in the State Responsibility Area and 6,499 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. 1993 Box Springs Fire Of 2,806 acres in all · Cause: Miscellaneous 1,580 acres
  2. 1962 Unnamed fire Of 1,620 acres in all 1,521 acres
  3. 1970 Box #11 Fire Of 1,518 acres in all 1,496 acres
  4. 2001 Watkins Fire Of 1,404 acres in all · Cause: Arson 1,347 acres
  5. 2003 Pass Fire Of 2,456 acres in all · Cause: Arson 1,335 acres
  6. 1980 Railroad Fire Of 1,587 acres in all 1,264 acres
  7. 1970 Reche Fire Of 3,864 acres in all 1,178 acres
  8. 1995 Reche Fire Of 1,482 acres in all · Cause: Miscellaneous 1,140 acres
  9. 1963 Railroad #26 Fire Of 1,332 acres in all 1,037 acres
  10. 1981 Colton Fire Of 4,051 acres in all · Cause: Miscellaneous 889 acres

And 42 smaller fires. In all, 6,841 acres of ZIP code 92557 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 92557

Neighboring ZIP codes

  1. 92557 67% Very High · this area
  2. 92324 48% Very High
  3. 92507 46% Very High
  4. 92553 1% Moderate · 1% Very High
  5. 92555 67% Very High