ZIP code 92678

Orange County, including Trabuco Canyon and Rancho Santa Margarita

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Report created October 31, 2026 at www.firezones.org/zip/92678

Summary

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    1. Very High 3,838 acres · 3,606 state, 231 local 16%
    2. Not mapped by CAL FIRE 20,580 acres · Mostly federal land 84%

    24,418 acres of land in all, 3,606 in the State Responsibility Area and 231 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 19 fires that burned here

    1. 2024 Airport Fire 23,526 acres in total · Cause: Equipment use 14,043 acres here
    2. 1980 Indian Fire 28,940 acres in total · Cause: Miscellaneous 12,471 acres here
    3. 1958 Steward Fire 68,106 acres in total 12,244 acres here
    4. 1993 Ortega Fire 21,012 acres in total · Cause: Miscellaneous 4,917 acres here
    5. 1925 Unnamed fire 8,650 acres in total 4,824 acres here
    6. 1954 Jameson Fire 7,881 acres in total 2,882 acres here
    7. 2018 Holy Fire 23,025 acres in total · Cause: Miscellaneous 2,723 acres here
    8. 1923 Unnamed fire 2,150 acres in total 2,032 acres here
    9. 1919 Unnamed fire 2,225 acres in total 1,080 acres here
    10. 1970 Nelson Fire 3,586 acres in total · Cause: Miscellaneous 466 acres here

    And 9 smaller fires. The most recent was the 2024 Airport Fire, which burned 14,043 acres here. In all, 23,875 acres of ZIP code 92678 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 92678

Neighboring ZIP codes

  1. 92678 16% Very High · this area
  2. 92530 34% Very High
  3. 92676 52% Very High
  4. 92679 49% Very High
  5. 92688 66% Very High
  6. 92883 54% 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