ZIP code 92557

Riverside County, including Moreno Valley and Highgrove

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Report created October 31, 2026 at www.firezones.org/zip/92557

Summary

  • Fire hazard severity zones

    Share of the land in each CAL FIRE 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 April 1, 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

  • Fire history

    The 10 largest of 52 fires that burned here

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

    And 42 smaller fires. The most recent was the 2023 Reche Fire, which burned 54 acres here. 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

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

Sources

Fire hazard severity zones
CAL FIRE Office of the State Fire Marshal
State map published June 27, 2025, local map February 2, 2026
Fire history
CAL FIRE Fire and Resource Assessment Program
Published July 28, 2026

This site is independent and not affiliated with CAL FIRE, so for an official determination, check with the agency or your city or county. How we read the data