ZIP code 92678

Orange County, including Trabuco Canyon and Rancho Santa Margarita

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Report created October 27, 2026 at www.firezones.info/zip/92678

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    16% 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

    98% has burned

    Most recently the 2024 Airport Fire, which burned 14,043 acres here, one of 19 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    57% 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 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 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. 2024 Airport Fire Of 23,526 acres in all · Cause: Equipment use 14,043 acres
  2. 1980 Indian Fire Of 28,940 acres in all · Cause: Miscellaneous 12,471 acres
  3. 1958 Steward Fire Of 68,106 acres in all 12,244 acres
  4. 1993 Ortega Fire Of 21,012 acres in all · Cause: Miscellaneous 4,917 acres
  5. 1925 Unnamed fire Of 8,650 acres in all 4,824 acres
  6. 1954 Jameson Fire Of 7,881 acres in all 2,882 acres
  7. 2018 Holy Fire Of 23,025 acres in all · Cause: Miscellaneous 2,723 acres
  8. 1923 Unnamed fire Of 2,150 acres in all 2,032 acres
  9. 1919 Unnamed fire Of 2,225 acres in all 1,080 acres
  10. 1970 Nelson Fire Of 3,586 acres in all · Cause: Miscellaneous 466 acres

And 9 smaller fires. 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

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 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